My highlight of the mission so far has been teaching a lesson in a secondary school round here and explaining to a group of muslim students how (for Christians) Jesus' death on the cross shows how God can be both just and merciful. I could almost see lightbulbs start to come on...
As far as I know, Islam teaches that God is both just and merciful, but provides no way for him to both justly punish us for the many things we do wrong and mercifully let us off.
I'm down to preach next Sunday on the second commandment. Should be interesting.
Much prayer needed.