The Sphere Trilogy - story of Al-Khidr

https://www.amazon.com/dp/B09982GH7T?binding=kindle_edition&ref=dbs_dp_rwt_sb_pc_tukn

These books are in a series, telling the story of a medieval alchemist Al-Khidr, who found a mysterious ‎sphere inside the Great ‎Pyramid of Giza and he eventually was able to activate the time and space travel ‎device. The sphere transported him to an ‎alien planet, Lyra, which Al-Khidr initially called Al-Eard. He ‎learned pyramids were made by Lyrians but ‎they left Earth as they considered Earth as a cursed planet.‎
Al-Khidr felt obliged to help aliens as he took it as his destiny to help the Lyra in coming out of the problem ‎‎they were facing. To solve the problem, he had to travel back to Earth and come back in a set time.‎