Here is the Agni Parthene, sung by Russian monks from Valaam monastery, translated by me. I don't know Church Slavonic, nor any Slavic language, so I had to compare the lyrics to words found in languages like Russian, Ukrainian, Macedonian, and Serbian in order to get an understanding of their meaning. Wiktionary has been by best friend in translating some of these xD Here's the video where I found this:
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