From Dom Guéranger's The Liturgical Year.
The holy martyrs Felix and Adauctus won their palms in the reign of Diocletian. Their tomb, which lies close to that of the Apostle of the Gentiles, is adorned by one of the beautiful epitaphs of Pope Saint Damasus. Let us address to God the prayer, wherein the Church implores their powerful protection.
Collect
Majestatem tuam, Domine, supplices exoramus: ut, sicut nos jugiter sanctorum tuorum commemoratione lætificas, ita semper supplicatione defendas. Per Dominum.
We suppliantly beseech thy Majesty, O Lord, that as thou dost ever rejoice us by the commemoration of thy saints, so thou wouldst always defend us by their supplication. Through our Lord etc.