The frescoes flanking the altar are by Pompeo Cesura. The left-hand picture is a standing figure of Saint Augustine. The pier-pilasters are divided by painted frames into two rectangular panels on each side with the depictions of the Evangelists by Andrea Lilio. In the roundels over the flanking side pictures is the Annunciation, with the Archangel Gabriel on the left

(Another photo of the fresco here)