St. Robert Bellarmine

http://www.breviary.net/propsaints/propsaints05/propsaints05135.htm

Let us pray.O God, who didst adorn blessed Robert, thy Bishop and Doctor, with marvelous learning and virtue to expose the deceptions of error and to defend the rights of the Apostolic See, grant by his merits and intercession, that love for the truth may increase in us, and the souls that do wander may return to the unity of thy Church. Through.