During the 2022 Russian invasion of Ukraine, after seeing his family evacuated to a safe zone, Amosov stayed in Ukraine and joined several other notable fighters, including former boxing heavyweight champion Wladimir Klitschko and his brother, former heavyweight champion Vitali Klitschko, current unified WBA (Super), IBF, WBO and IBO heavyweight champion Oleksandr Usyk, and former lightweight champion Vasiliy Lomachenko, in defending Ukraine from the Russian invasion. During this time, Amosov was the Bellator Welterweight Champion. After the liberation of his hometown Irpin from the battle over the town, Amosov published a video of himself rescuing the Bellator Welterweight Champion belt, which was hidden at his mother's home.
