Challenge: Surviving Roman paganism

Your challenge, should you choose to accept it, is to have, with a POD after the establishment of Christianity as the state religion of the Roman Empire, at least 10% of the population in what was then its territory as members of the Greco-Roman religion by the present day.
 

archaeogeek

Banned
Your challenge, should you choose to accept it, is to have, with a POD after the establishment of Christianity as the state religion of the Roman Empire, at least 10% of the population in what was then its territory as members of the Greco-Roman religion by the present day.

Sardinia somehow survives as an independent country, fights everyone off, and is neither christianized nor islamicized?
 
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