In the Islamic personification of God, he is vast and unknowable. His wrath – not his love – is emphasized, although he is in the Qur’an and is attributed with mercy and forgiveness.
Do not do this – do not try to argue that Jesus is actually the Son of God. Don’t deny it either, but remember that God will reveal Himself to each person in a unique way; we are only participants in God’s grand plan for this person. Arguing the deity or son-ship of Jesus will only reinforce preexisting barriers until the time is right. God may be saving some information for later, allowing each person to digest the truth one piece at a time.
I have one rule when I am around the people from the Middle East and North Africa — be honest, be real. Confess your faults. Treat others with more honour. Respect your friends’ religion. Always assume that the person you are speaking with has a more holy life than you do, and treat them so. Be the low person on the totem pole. Be the servant.