Going along the aisle towards the musical choir the first right-hand chapel is of the Blessed Sacrament or also called Gold or by Wiśniowiecki family. The chapel was created over XV-XVIII cc. The interior space of the dome is adorned by Stanisław Stroiński polychrome of the Eucharistic theme.

In the Late Baroque alter of the second quarter of XVIII c. a copy of the icon of XVII c. by Peter Paul Rubens The Descent from the Cross can be seen. On the walls there are two epitaphs: the tombstone in honor of Mikołaj Krosnowski the Chernihiv governor of the turn of XVII/XVIII c. and the memorial of Lviv metropolitan archbishop Franciszek Ksawery Wierzchlejski of the second half of the XIX c. by Tadeush Barączchisel.