His eloquence made him the most prominent theologian of the Serbian Orthodox Church after Nikolaj Velimirović and Justin Popović, and his attacks on the Vatican's proposed Concordat evoked a prohibition by the government.

That grim episode of forced Repatriation of Cossacks after World War II in 1945 became common knowledge only when Nikolai Tolstoy wrote "Minister and Massacres", blaming Harold Macmillan for advising General Charles Keightley of V Corps, the senior Allied commander in Austria responsible for Operation Keelhaul, which included the forced repatriation of up to 70,000 prisoners of war to the Soviet Union and Josip Broz Tito's Yugoslavia in 1945.

At the end of the hostilities, from the displaced person camp in Austria Najdanović and Jelena left Linz for Rome, where he published Serbian Orthodox liturgical textbooks at the expense of the Vatican's generous printer.

In 1947 Najdanović and his wife went to England, being recommended by the Serbian Patriarch Gavrilo V to the confidence of Bishop of Gibraltar in Europe, the Right Reverend Harold Buxton.

Once in London, Harold Buxton, and Arthur Foster of the World Council of Churches Service to Refugees were waiting at "Victoria Station to escort 40 Serbian students and clergy",[1] among them Mr. and Mrs. Najdanović, "to Dorchester on Thames," near Oxford, where a Theological Training School had been opened in the Old College building under the name of Dorchester College[2] to help the Serbian Orthodox Church, then in exile.

Milan Savich (1920-2010) of Chicago, Dr. Veselin Kesich (1921-2012) of the Saint Vladimir's Orthodox Theological Seminary, Metropolitan Irinej Kovačević (1914-1999) of the Diocese of New Gracanica - Midwestern America, and others.

The repair work on the "Holy Trinity" Serbian Orthodox Church was completed in 1961, but the consecration took place on September 6, 1964, officiated by Bishop Stefan Lastavica of the Eastern American Diocese.

In 1967 Najdanović and Jelena moved to the United States where he was a priest in New York City and Phoenix, Arizona before retiring at the Glendora Health Care Center in Wooster, Ohio.

He was an eye-witness on more than one occasion of the folly and excesses of the Third Reich as well as the Three Super Powers; and these scenes not only increased his love for the church, but strongly impressed him with that dread of anarchy, of popular movements ending in bloodshed, and of communistic, socialistic and fascistic views which characterized him in after life (no differently than Nikolaj Velimirović and Serbian Patriarch Gavrilo V).

To these experiences, too, we may partly ascribe the reverence for law and order, for the rights of property, and for the democratic, monarchical form of government which he appears to have sincerely felt; and, orator as he became in a certain sense, gave his mind a deep conservative tinge.