Patriarch of Moscow and all Rus'
The Patriarch of Moscow and all Rus' (Russian: Патриарх Московский и всея Руси, romanized: Patriarkh Moskovskiy i vseya Rusi), also known as the Patriarch of Moscow and all Russia, is the title of the primate of the Russian Orthodox Church (ROC). It is often preceded by the honorific "His Holiness".
Source: Wikipedia — Patriarch of Moscow and all Rus' (CC BY-SA 4.0)