Desert of Fire (1971)
A desert bandit leader robs a jeep and hauls off a bunch of American money. He doesn't get much of a chance to enjoy it, however, because he and his men are soon attacked by a so called phantom, who kills all his men, and his own weapons mysteriously disappear. When a beautiful young woman shows up to see if he still has the money, the phantom rapes her. Another man shows up and the three decide to head into the desert to find the treasure and wind up finding something the weren't expecting.
The musical score for this film was done by the legendary Ennio Morricone and features the lovely Edwige Fenech.