argsilverson,
interesting idea. They should be cowering creatures. Might you have seen these (no picture on the Perry website)
But they will probably be in Egyptian uniform (or it's remnants) rather than "Arab" dress. Sadly I haven't seen this set yet, but I have some similar by Cannon Fodder Miniatures (if I recall correctly) which are in this dress.
Maybe you could try looking through the various Renaissance, Reconquista, Ancient etc ranges that feature Arabic or similar figures. After all, if he is to be unarmed, any cowering wretch in suitable dress should work.
The Perrys do casualties in their Crusades range and maybe one of those may be useful. There is a pic for that set