This is the Serbian Orthodox Chant - “The terrifying Judgement. 
Based on judgement Day predictions.

Orthodox Christian Chant - The Terrifying Judgement

Byzantine Chant Psalm 117

Song by Farya Faraji, go visit his youtube channel:
https://www.youtube.com/channel/UC2_JOhJf-VAQm5VRqjY40Rw

"Молитва Иисусова/The Jesus Prayer"
Russian Orthodox prayer 🇷🇺