O Spirit of God, we ask you to help orient
all our actions by your inspirations,
carry them on by your gracious assistance,
that every prayer and work of ours
may always begin from you
and through you be happily ended.
This prayer is frequently used by Jesuits to begin classes and meetings.
Excerpt from Hearts on Fire: Praying with Jesuits, edited by Michael Harter, SJ.
AMDG PrayerPrayer Before a Meeting