Russian orthodox christianity is separate from oriental orthodoxy practiced in places like Syria or Armenia, who follow nicene Christian traditions. They may be othered by their western European counterparts, but eastern orthodoxy is fairly normal in places like Greece. I don’t think it would be appropriate to label them as oriental, especially in the modern understanding of the word.
Russian orthodox christianity is separate from oriental orthodoxy practiced in places like Syria or Armenia, who follow nicene Christian traditions. They may be othered by their western European counterparts, but eastern orthodoxy is fairly normal in places like Greece. I don’t think it would be appropriate to label them as oriental, especially in the modern understanding of the word.