Jürgen Hubert said:As long as they observe the Five Pillars of Islam, there is no reason why they shouldn't be. Of course, the politics involving them might get ugly - wizards wanting to hush them up, the local ruler wanting to use them against their enemies...
And of course, the Shiite/Sunni division causes plenty of problems in modern-day Iraq - and these problems might continue on Yrth.
The Iraqis themselves will likely want power of their own, even introduce democracy seeing as it's proving popular back home. With their weapons and their knowledge they would be a force to reckon with.
At the same time, they're likely to find a few changes in the local Islam. Interpretations of the Koran and the traditions that differ, often radically, from mainstream Islam. Please note that the differences between Sunni and Shia are political, not religious. The two may find they have more in common with each other than with the people they wind up among.
In any case, somebody's going to want to take advantage of them. Lots of plotting and manipulation. Do any of them show a talent for magic? Are any subject to divine revelation? Which ones follow the old tradition of Mohammed's inherent perfection, and which follow the new tradition that Mohammed was a fallible man, and so introduced error into God's Word when he transcribed it?
And how are the non-humans likely to react?