Deus, qui inter regáles delícias et mundi illécebras sanctum Casimírum virtúte constántiæ roborásti: quǽsumus; ut ejus intercessióne fidéles tui terréna despíciant, et ad cœléstia semper aspírent.
O God, Who strengthened St. Casimir with the virtue of steadfastness amid the luxuries of a royal court and the allurements of the world, we beseech You, that through his intercession Your faithful may treat earthly things as naught and ever aspire to those of heaven.