Painting of Roman Christians

Christ along with two saints (Saint Gorgonius and Saint Tyburcio) and above the four martyrs in the fresco of Roman Christians from the 4th century CE. The work is in one of the crypts of the Catacombs of Saint Marcelin and Peter in Rome at Via Latina.
They both died by beheading during the reign of the emperor Diocletian (284-305 CE). According to tradition, their bodies were thrown into the grave, which they had to dig out themselves. St Lucy extracted them and buried it again with respect. The main figure of the painting is Jesus Christ, standing in the middle of the fresco in the form of a lamb.