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| Russian | English |
| Восьмой Вселенский собор | Eighth Ecumenical Council (869-870, a council of the Christian church, meeting in Constantinople. The Roman church eventually recognized it as ecumenical, but the Eastern church for the most part denied its ecumenicity and continues to recognize only the first seven ecumenical councils) |
| Восьмой день собрания | Shemini Atzeret |
| Восьмой день собрания | Eighth Day of Solemn Assembly |
| Восьмой крестовый поход | Eighth Crusade (1270-1271, it ended in tragedy and brought no help to the East) |