Where did many ancient Greeks seek Refuge in times of invasion?

In ancient Greece and Rome, an asylum referred to a place where people facing persecution could seek refuge. These locations were largely religious in nature, such as temples and other religious sites. A similar concept, the Cities of Refuge, existed in the ancient Levant.

Explanation:

https://en.wikipedia.org/wiki/Asylum_(antiquity)#:~:text=In%20ancient%20Greece%20and%20Rome,existed%20in%20the%20ancient%20Levant.

explanation:

may i ask what challenges?