The singer, whose music has since been banned in her home country, speaks out against war.
Lukashenko has not committed his small army to join Russia's war, but the risk of a new attack from Belarusian soil compels Ukraine to protect its northern border.
"For the victory of Russia, you need to stop lying, stop stealing and stop thinking only about your well-being and your own places, but think about the soldiers, about their lives," said Prigozhin.
Poland, the UK, France, and other Europeans states have begun discussing the situation in Russia.
Russia's foreign ministry said in a statement on Saturday that it warned Western countries against using the Wagner mercenary group's mutiny "to achieve their Russophobic goals".
Wagner militia chief takes feud with top brass to new level, Prigozhin earlier accused army of deceiving Putin over Ukraine
Yusov said the Belgorod operation would create a "security zone" to protect Ukrainians from cross-border attacks by Russia.
Ukrainian forces used humor to mock Russia's performance on one of the largest national holidays.
The Kremlin said two drones had been used in the alleged attack on Putin's residence in the Kremlin citadel, and Ukraine declined responsibility.
Putin received reports from Airborne Forces commander and Dnieper area commander to discuss the ongoing operations in the Kherson and Zaporizhzhia theaters.