OK I played as set against Isis. I think the reason I won was because I expanded more and chose the right god to make my priests more powerful. After I took the center of the map and the 2 TCs there, he went mythic with Thoth and tried to meteor my migdols, but they stood up ok, and my priests quickly healed all my troops. Once I went mythic he resigned as I could easily meteor him. Other thing I did was convert some elephants, I don't think that really helped other than it made him waste resources training camels.