Pantocrator
Proper noun
Meaning
Pantocrator
The ruler of everything, especially as an epithet for Jesus Christ; an artistic depiction of Jesus in this aspect.
Examples
John II built the monastery of the Pantocrator (Almighty) with a hospital for the poor of 50 beds.
One mosaic they documented is Christ Pantocrator in a circle, which would indicate it to be a ceiling mosaic, possibly even of the main dome which was later covered and painted over with Islamic calligraphy that expounds God as the light of the universe.
For For Christ Pantocrator seated in a capital "U" in an illuminated manuscript from the Badische Landesbibliothek, Germany.