Which two store cities did the enslaved Israelites build for Pharaoh?

Answer: Pithom and Rameses

Under oppressive taskmasters the Israelites built Pithom and Rameses as store cities for Pharaoh.

“So the Egyptians appointed taskmasters over the Israelites to oppress them with forced labor. As a result, they built Pithom and Rameses as store cities for Pharaoh.”— Exodus 1:11 (BSB)