When Mahla is led on horseback through a gorge pursued by the Riff she is clearly wearing goggles which disappear in the subsequent close-up.
When Burt Lancaster steps out of the bath to get dressed, the trousers he puts on get a little wet and are still that way when he asks for his jacket, but when the jacket is quickly brought to him his trousers are suddenly completely dry.
The stripper clip for the machine gun clearly shows blank cartridges.
When Mahla escapes from the legionnaires on a horse, pursued by Kincaid, the rider is an obvious stunt double, much larger in physique than Mahla.