Restoration of paganism from Julian until Valens
The restoration of paganism from Julian until Valens was a brief period, from 361 until 375, of relative tolerance towards pagans in the Roman Empire. In the late Roman Empire, it was preceded by a period of persecutions under Emperor Constantius II and was followed by those of Emperor Gratian.
Source: Wikipedia — Restoration of paganism from Julian until Valens (CC BY-SA 4.0)