An Arabian Knight (1920)

When Egyptologist George Darwin excavates the Temple of Ra at Luxor, his spinster sister Cordelia deludes herself with the belief that she is the reincarnation of Egyptian princess Rhodolphis. Declaring that Ahmed, an Arabian donkey tender, is the reincarnation of the prince she lost and loved 2,000 years earlier, Cordelia offers him a job in the Darwin home. Ahmed becomes the household protector, rescuing Elinor Wayne, the archaeologist's ward, from abduction by Aboul Pasha, a dissolute Egyptian. Afterwards, Pasha leads a hashish-maddened horde and attacks the Darwin home. Ahmed repels the invaders, saves the Darwins, and wins Elinor's love.