How to have a Christian church/assembly in a place where many Muslims are

Get the Bible in Arabic.
http://www.arabicbible.com
print out

• Proverbs
• Gospel of Matthew
• Galatians chapter 5, chapter 6
• Philippians
• I Peter
• II Timothy

(if possible, purchase a complete Bible in paper)
(if not possible yet, only print out from computer)

Teaching:
Download works of Thomas Manton for free (best are 6, 7, 8, 9, these contain all his sermons on Psalm 119:1 – Psalm 119:176, his best writings):

(volume 1, 2, 3, 4, 5, 6, 7, 8, 20)
http://www.ccel.org/search/books/Thomas%20Manton?
(all volumes, from 1 to 22)
http://www.archive.org/search.php?query=thomas%20manton

Thomas Manton has (nearly) the best teachings among all Christians in 2000 years.
The other best-quality teachers are Augustine, Jerome, and Martin Luther.
First start with Thomas Manton, because Martin Luther is slightly more difficult to read.

One sermon of Thomas Manton is worth in quality (and correct teaching) to 5 or 10 sermons of current American pastors (and they often teach wrong things, or have wrong heart).

Hopefully some person is translating Thomas Manton sermons into Arabic, and putting them online for free.

MEETING
Meet only by two or three people at first.

For where two or three are gathered together in my name, there am I in the midst of them.
Matthew 18:20

Start meeting with prayer.
https://bookofjeremiah1eighteennineteen.wordpress.com/prayer-as-necessary-as-opening-eyes-in-the-morning/
For teaching, study the bible, and teach (either 1 person speak for 30 minutes, and you rotate person at next meeting, or each person teach for 10 minutes, and all two/three persons teach each meeting).
Then you sing some hymns, if possible.
http://www.haya.org/songshomepage.htm
If not possible, then pray again.

Half the meeting time should be prayer, half the meeting time should be teaching about the Word of God.

Then cook and eat together.

This is for any Christian.
I don’t recommend that the meeting increases to more than 10 people, if convenient, you can have many people that way.   If not convenient, meet in many groups of 2 and 3, and perhaps all come together once per month (such as, when other people are having a festival or a celebration, for any reason)

A church is not a building of brick-and-stone.
A church is an assembly of believers.  An assembly of 2 or 3 is just as holy as an assembly of many.    Jesus Christ most often had only an assembly of Himself and 12 people.   Although, He sometimes also had an assembly of Himself, 12 disciples and then 70 disciples (Luke 10:1).

The purpose is to get near to God, so as to have your spirits present in the assembly-in-front-of-God, in the heavenly places (Hebrews 12:22-24).   Often, in an assembly of many people, people get distracted by “what other people are thinking of me”, so their heart is not near to God, but in this world.
The purpose of life is to have the heart/mind rooted in the Word of God (memorize it all, all the bible), and to be near to God in heart/mind.    The objective is not to assemble for a ceremony, which is merely some physical bodies getting near to a building of brick-and-stone.   The objective is to get the heart/mind of each person near to God in heaven.

If there were 5000 Christians, it is better for them to meet in 2 or 3 each week, and come together  in groups of 50 (Luke 9:14) once every several weeks.
In America, they meet 5000 people at once, each week, all looking at one pastor.   The pastor get perverted by the crowd-attention (Jesus Christ always avoided that, it’s temptation of self-importance displacing God’s importance, it’s the original sin, both of Satan and of Adam).  The pastor then likes to get himself admired, rather than get God admired (so in America, there is the sin of really wanting to get oneself admired, while supposedly talking about how God is admirable).
And in a crowd of 5000, nobody really knows one another, so most people are like tourists, going there for the ceremony, and then forgetting God for the next 6 days (even for the other hours of Sunday).

But real Christians are to always remember God and always honor God.
Also, there is no holiness of geography location anymore, Jesus abolished it.  The “Promised Land” has been moved from Jerusalem on earth, to Jerusalem in Heaven.
A sector of Heaven is called Jerusalem.   The jerusalem on earth was only meant as a classroom-demonstration, using the whole earth as a classroom, it is as if a teacher would take one ball to represent the sun, and another smaller ball to represent the earth, and demonstrate about sun-and-earth.  But that ball and that smaller ball are not the real sun, real earth, only demonstrations in the classroom to teach about the things in cosmos.  So similarly, God used the whole world as a classroom, in the Old Testament times, to give example of how to go from fleshly-sin to spiritual life.   Egypt symbolized the flesh, or bondage to sin (or lacking the ability to stop sinning, or lacking the ability to desire to stop sinning)

There is no holiness of time anymore, Jesus also abolished that.  Galatians 4:10  Colossians 2:16
Sabbath (the day of resting, one day after 6 days of work) has been moved to heaven.
Christians are to always do spiritual work in this life (memorize Bible, honor God with the heart, strive against sin in subduing the flesh and living in the Spirit, and also teaching other people to bring them to knowledge of God, and also maintaining/encouraging other Christians to live in holiness and love-towards-God)
Christians will finally rest when they get to heaven (essentially, to transform from the thinking-ability of fishes or sheep, to having the thinking-ability of man.  Even though we are men in this world, in God’s presence our thinking-ability is no more than that of fish or sheep.   But God has adopted us as sons, as many as have committed their lives to Christ.   Christ is God’s son in that He is an inner-component of God.  We are God’s son in that God adopts us, because Christ asked God (one part of God asking the whole) to adopt those who love Him.    So when we get to heaven to live with God, if we endure in faith and godliness till the end, we will get as near to God as Christ is near to God, and we will also fully gain that much more thinking-ability and existence.

There is no holiness associated with physical items (like food) anymore, Jesus abolished it (Colossians 2:16, I Timothy 4:1-4)

In summary, there is no holiness associated with physical items (like food of this world), or with geographical location (like jerusalem of this world), or with moments in time (like one day more holy than others).

So you can meet at anytime.  You can meet on Fridays if you like, or on any weekday, or on Sunday evening.   You don’t have to tell other people you are Christians by meeting on Sunday.   That is not necessary.   You should not be ashamed of the LORD (Mark 8:38)

Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy angels.
Mark 8:38

But Lord Jesus is not a moment in time, or a geographical location (a Christian assembly can meet in any home, it can meet in a car, anywhere), or a physical item (Catholic is a man-worshipping erroneous cult, to assign holiness to items).
Lord Jesus is all the words of the Bible (John 1:1).   Not the language words in Arabic, or English, or Persian, or any language, because the words are written differently in all those languages.   Rather, Lord Jesus is all the meanings of the Bible, which are the same, though it can be written in different languages.    This is what is meant by the Word of God, the meaning that God wants to convey.

Lord Jesus wants to dwell in your heart, by you memorizing and understanding all the Word of God.    The Bible is God Himself, written into words.  (make sure you have a correctly translated version, but any translation from before 1900 is probably accurate).

The Word of God is a mirror, through it you see not your material face (your physical resemblance), but God’s spiritual face (God’s spiritual resemblance: holiness, truth, purity).

Also, if you look as often as you can into this spiritual mirror, and look at God’s face, you will also become more and more resembling God, that is, you will acquire more holiness, truth, and purity.

But we all, with open face looking at, as in a mirror, the glory of the Lord, are changed into the same image from glory to glory, even as by the Spirit of the Lord.
II Corinthians 3:18

But be doers of the word, and not hearers only, deceiving your own selves.
For if any be a hearer of the word, and not a doer, he is like unto a man beholding his natural face in a glass:
For he beholds himself, and goes his way, and straightway forgets what resemblance of man he was*.
But whoso looks into the perfect law of liberty, and continues therein, he being not a forgetful hearer, but a doer of the work, this man shall be blessed in his deed.
Jacob (“James” in English) 1:22-25

* that is, God created humans without sin, in the beginning.  God created humans in His own image (Genesis 1:27), that is, God created humans in his own resemblance:  not a material resemblance, but a spiritual resemblance (holiness, truth, purity).
So when we look into the Bible, we look at what we are supposed to resemble, what we have the duty to become, in our hearts and minds.