On 1 September 1408, Patriarch
Matthew I of Constantinople consecrated him in Constantinople as Metropolitan of Kiev and All Rus'. He was given the right to rule the whole metropolis excluding the
metropolis of Galicia. By that time, only two of the five dioceses remained in
Galicia. On 1 September 1409, Photius arrived in Kiev, and by Easter (April 22, 1410) – in Moscow. Northeastern Rus', including the metropolitan region, was devastated by the invasion of Khan
Edigu in 1408, resulting in famine and pestilence. Photius found his metropolitan residence ravaged and that the
ecclesiastic treasury was empty. Everything seemed to be in chaos and he didn't know a single word of Russian. Photius made efforts to restore the church economy and the finances of the metropolis, turning to the grand prince of Moscow,
Vasily I, for help. The metropolitan was concerned about the state of church discipline and morality. Numerous letters were written to him (mostly dated 1410–1420s). In 1414,
Vytautas, the grand Duke of Lithuania, attempted to re-establish the
metropolis of Lithuania. He arranged for a synod of bishops to elect
Gregory Tsamblak as the metropolitan of Lithuania. The consecration took place without the consent of Patriarch
Euthymius II of Constantinople who deposed and anathematized him and who confirmed the same in letters to Photius, Emperor
Manuel II Palaeologos and Grand Prince Vasily I. After Gregory’s death in the winter of 1419–1420, Photius made peace with Vytautas. As a result, the entire metropolis, including Halych, was unified under Photius until his death in 1431. == Veneration ==