I brought with me a simple Prayer Service in Devotion to Saint Louis provided by the Archdiocese of St. Louis which is perfectly suitable for private use and for use in small groups, classes, and families.
One of the chapels in La Chiesa di San Luigi dei Francesi is home to a few beautiful paintings of the French king, who was deeply devoted tp the Passion of Our Lord and a secular Franciscan:
It was in this chapel (or just outside it, really) that I prayed for the intercession of his holy king.
This church is also home to three remarkable paintings by the great Caravaggio:
Saint Louis, patron of our city and of our Archdiocese,
please bless us who look to you for guidance.
Help us to be kind to each other and to the poor as you were.
Give us courage to choose well, and strength to do great things as you did -
a young boy who became a great king.
Help us to become saints like you,
so that we can be with you and Jesus in heaven someday.
Saint Louis, pray for us!