Grant, O God, of your mercy, that we may come to everlasting life, and there beholding your glory as it is, may equally say:
Glory to the Father who created us,
Glory to the + Son who redeemed us,
Glory to the Holy Spirit who sanctified us.
Glory to the most high and undivided Trinity, whose works are inseparable, whose kingdom without end abides, from age to age forever. Amen.
Source: a personal prayer of St. Augustine of Hippo, 354-430, in Oden, Ancient Christian Devotional
Also found here: A Lutheran Prayer Book, ed. Doberstein, © 1960 Muhlenberg Press, Philadelphia PA