Literally "He who uses fire" or "The one clothed in fire". Eri Ajah/Aja: Meaning "He who eats/consumes the sacrifice".
While the phrase is ancient, its contemporary popularity is largely due to the by Mr. M & Revelation. Oji Oku Eri Ajah
It is important to distinguish this spiritual phrase from other similar-sounding Igbo terms: Oji Oku Eri Ajah Literally "He who uses fire" or "The one clothed in fire"