[4] After finishing his studies he worked in the state archives of SFR Yugoslavia, Soviet Union and Italy in the Roman representation of the Ecumenical Patriarchate of Constantinople and later served as a priest of the Patriarchate of Constantinople.
His service with the Patriarchate of Constantinople ended in 1997, when Patriarch Bartholomew gave a statement saying that Dedeić had been dismissed for canonical offenses including adultery and embezzlement, that his priestly rank had been revoked, and that he had been reinstated as a layman.
[5] On 6 January 1997 in Cetinje, he was proposed and elected head of the Montenegrin Orthodox Church.
He called Dubrovnik a "Serbian city", while comparing Croatian President Franjo Tuđman to Adolf Hitler.
[1][6] During the 1992-1995 Bosnian War, Dedeić had been fundraising to support the Army of Republika Srpska under Ratko Mladić's command during his plight to support the Serbs fighting the Bosnian Muslims and Croats.