Thanks for posting the complete prayer. In my parish, we recite that prayer after every Mass. It is always funny to see visitors to the church look in bewilderment as the congregation remains standing, and after the last note of the recessional hymnn - immediately begins that prayer.
I like that!
It might stop the applause for the choir that thinks they are performing. We haven’t gotten them to the weekend Masses, but this would be worth trying.
After daily Mass we say
3 Hail Marys
1 Our Father
1 Glory Be
1 St. Michael the Archangel
I understand these are previous prayers that were prayed by the priest after every Mass dismissal. He would come right back out and say them.
Are they called Leonine prayers?