Abbott and Costello Meet the Mummy (1955)

Bud and Lou, two stranded American archaeologists, run afoul of an Egyptian cult with big plans to resurrect the mummified corpse of Klaris, guardian of his Princess Ara's treasure-filled tomb. When Lou accidentally eats the cursed medallion needed to find the ancient treasure, the two become targets of the cult's leader, his goons, a mysterious femme fatale, and the mummy of Klaris himself!