From Dom Guéranger's The Liturgical Year.
‘Memor ero tui, Justina virgo. I will ever bear thee in mind, O virgin Justina.’ This inscription Venice engraved on the coin of its republic, after the victory of Lepanto. On that day of triumph, the martyr, who had won her palm on October 7 fifteen centuries before, had united the power of her prayers with the strength of St. Mark’s lion; and the dukedom proclaimed Justina its second patron. But Lepanto is not her only claim upon the world’s gratitude. In her native city, the sons of St Benedict had gathered round the tomb where lay her precious relics. The great movement initiated by the Venetian, Luigi Barbo (1408), began at St. Justina’s monastery in Padua: the Order was rescued from the disastrous consequences of having secular abbots in commendam; and thus Monte Cassino itself was restored to some part of its ancient splendour.
Honour, then, to this day of salvation! And glory to her, through whose intercession the heavens have rained down their dew of consolation upon the earth!
Prayer
Deus, qui nos annua beatæ Justinæ virginis et martyris tuæsolemnitate lætificas: da, ut quam veneramur officio, etiam piæconversationis sequamur exemplo. Per Dominum.
O God, who givest us joy by the annual solemnity of blessed Justina thy virgin and martyr; grant that we may follow the example of her pious life, whom we venerate by this Office. Through our Lord.