If you mean a about a war in heaven — the most famous source is Revelation 12:7-9 (Christian Bible), where Michael and his angels fight against the dragon (Satan) and his angels, and Satan is cast down to earth.
It sounds like you’re looking for a text related to a “battle in heaven,” possibly in a Russian context (“ok ru” might refer to the social network OK.ru, or could be a typo). battle in heaven ok ru
If you’re asking for a (perhaps posted on OK.ru), that would depend on the author — for example, Mikhail Bulgakov’s The Master and Margarita contains a version of cosmic/spiritual battles, though not a direct “battle in heaven” as in Milton. If you mean a about a war in