Also he was leader of the Studite Brethren as the clandestine Archimandrite of the Univ Lavra during the time of the religion persecution in the Soviet Union.
After graduation from the school, he joined the Studite Brethren in the end of 1934 as a novice on 16 June 1935 was tonsured as a monk in the Univ Lavra.
Next year he was ordained as hierodeacon (1 October 1939) and hieromonk (29 October 1939), after successful graduation from the Lviv Theological Seminary, and in 1943 was appointed as superior in St. Joseph Lviv filial monastery.
[1] In 1951, when in Vladimir Central Prison died as a martyr of the faith previous Archimandrite, Father Klymentiy Sheptytsky, Nykanor was elected as his successor.
In February 1972 he was consecrated as auxiliary bishop for underground Ukrainian Catholic Archeparchy of Lviv by Blessed Bishop Vasyl Velychkovsky, that in this time was the Administrator for all the Ukrainian Greek Catholic Church in catacombs.