St. Simon and Jude
O God, Who through Thy blessed Apostles Simon and Jude hast brought us to the knowledge of Thy name, grant that by advancing in virtue we may celebrate their everlasting glory and by celebrating their glory advance in virtue. Through our Lord Jesus Christ, Thy Son, Who liveth and reigneth with Thee in the unity of the Holy Ghost, one God, world without end. Amen.
(Roman Breviary)