You mean the Russian Orthdox Church which is lead by Patriarch Kirill who himself is a very close Putin ally and constantly spreads Russian propaganda...that Russian Orthdox Church.
"His speeches frequently call for prayers for Russian authorities and military success, underscoring President Putin's central role in this perceived historic struggle. On September 12, 2022 Kirill focused on Putin's leadership: "Our special prayer is for the head of our state, the Supreme Commander-in-Chief Vladimir Vladimirovich Putin, who bears a special responsibility, as well as for all military leaders and those in power."
Why would Zelensky and Ukraine allow a religious organization that's advocating for the country that's invading them...that's crazy.
reutersinstitute.politics.ox.ac.uk