The Roman Missal: Proper of Saints, March and April (English) 3

1[March 4. St Casimir, Confessor.—Semidouble.]

2[Mass.—Os justi, for a Confessor only, page xxxv. except the following:]

3Prayer. Deus qui inter regales. O God, who amidst the delights of royalty, and the snares of the world, didst strengthen holy Casimir with the virtue of constancy, we beseech thee, that by his intercession thy faithful may despise earthly things, and ever aspire to those that are heavenly. Through our Lord, &c.

4[If it be Lent, a Commemoration is made of the Feria, after which of St Lucius, pope and martyr, by the Prayer, Deus qui nos, from the Mass, Sacerdotes, for a bishop and martyr, page v. with its corresponding Secret and Postcommunion.]