The altar in the middle was erected by Adlectus, a slave, who wanted to pay
tribute to Mithras, unconquered god and creator of light (genitor luminis).
The Latin text (CIL 03 - 04414):
Deo Invicto Mithrae
ADLECtus
SERvus Titi C ? V ?
GENitori LUMinis
Votum Solvit Libens Laetus Merito