[RKV]

I prefer islamic imperialism myself, but islamofascism will do in a pinch.

[VOA]

islamic imperialism

Pretty good.
Seeing how they are trying to take over the whole freakin' planet.

[attiladhun2]

Personally, I prefer the term "Sand-Nazi." It is shorter (rolls off the tongue easier), slightly more accurate, and avoids the offensive "Islamo" part (though I hardly think Muslims would find "Sand-Nazi" a particularly flattering term).