Son of Cleopatra 1964

In Roman-dominated Egypt, the corrupt administration of a governor named Petronius has sparked a revolt headed by El Kabir, a young man who learns that he's actually the son of Cleopatra and Julius Caesar. When Petronius' daughter, Livia, newly-arrived from Rome, falls into his hands, El Kabir uses this opportunity to win her over to his side before releasing her to her father.