In the 10th century, Byzantine missionaries reached the Caucasus and built several Byzantine-style churches around Teberda river. Sentinsky temple, built in the year 967, represents the oldest christian church in Russia.
The details are scarce about the influence of Christianity in the region but Circassians are known to have converted to Christianity (after previously holding “Habze” beliefs). They remained Christian until the XVII century conversion to Islam under the Ottoman influence. Alans (proto-Ossetians) are also mentioned, but Ossetians shared pagan beliefs until teh XIX century conversion Orthodox Christianity under Russian occupation.
The date of Sentinsky’s construction is written on it in ancient Greek, as the Christian mission is believed to have been lead by Nicholas Mystikos, the greek Ecumenical Patriarch of Constantinople.
Ikorta church of the Archangel (Ikort’a) is a Georgian Orthodox church built in 1172 by the dukes of Ksani noble family in Shida Kartli, Georgia.
The church houses the tombs of Ksani family members, including Shalva and Elizbar of Ksani, who died under torture in 1661 for opposing the Iranian/ Tatar oppression. Their remains were brought from Persia and they were canonized as saints.
Ikort’a is currently undergoing restoration works. * It’s note worth mentioning that the Church of Georgia is one of the oldest Christian churches.
South Ossetia is a disputed region, officially part of Georgia but under Russian defacto control. More on South Ossetia conflict here
Shida Kartli has been part of self-proclaimed South Ossetia republic since 1992.