Exotic Desert Western
...i know technically this may not fit the genre but it is a Western nevertheless;
your Arabs are the Indians and Duke even packs a pistol and wears one hip,funky hat which resembles Hondo's jus'a bit.
The Treasure is a bonus as they battle the desolate sands which are reminiscent of good ole sagebrush.
...and the music is delicious and so are the visuals by wizard Cardiff.