Here’s a prayer of petition and commitment for Transfiguration Sunday (February 19, 2012). It comes from the Presbyterian Church USA website.
Prayer of Petition & Commitment
(Matthew 17:1-8, Mark 9:2-9, Luke 9:28-36)
Great God of dazzling beauty and overshadowing majesty,
in Jesus Christ, your beloved Son,
we glimpse the image of your glory.
Teach us to listen to him
so that we may hear your voice
and follow your holy way;
through Jesus Christ our Savior. Amen.
— from Prayers for the Transfiguration, posted on the PCUSA website.