The Angelic Trisagion Prayer

In the name of the Father, and of the Son, and of the Holy Spirit. Amen.

V. Lord, open my lips.
R. And my mouth shall declare Thy praise.

V. O God, come to my assistance.
R. O Lord, make haste to help me.

V. Glory be to the Father, and to the Son, and to the Holy Spirit,
R. As it was in the beginning, is now and will be forever. Amen.

The part below is recited three times, once for each Person of the Holy Trinity.

All: Holy God! Holy Strong One! Holy Immortal One, have mercy upon us.

V. Our Father, Who art in heaven, hallowed be Thy name. Thy kingdom come. Thy will be done, on earth as it is in heaven. 
Give us this day our daily bread and forgive us our trespasses as we forgive those who trespass against us. And lead us not into temptation, but deliver us from evil.
Amen.

The following invocation is repeated nine times

  V. To Thee, O Blessed Trinity, be praise, and honor, and thanksgiving, for ever and ever! 
  R. Holy, holy, holy Lord, God of hosts. Heaven and earth are filled with Thy glory.
End of invocation repeated nine times
V. Glory be to the Father, and to the Son, and to the Holy Spirit,
R. As it was in the beginning, is now and will be forever.
Amen.

God the Father unbegotten, only-begotten Son, and Holy Spirit, the Comforter; 
holy and undivided Trinity, with all our hearts we acknowledge Thee: Glory to Thee forever.

V. Let us bless the Father, and the Son with the Holy Spirit.
R. Be praised and exalted above all things forever.
End of part repeated three times

At the end, all say:
Almighty, ever-living God, who has permitted us Thy servants, in our profession of the true faith, to acknowledge the glory of the eternal Trinity, and in the power of that majesty to adore the Unity, grant, that by steadfastness in this same faith,
we may be ever guarded against all adversity: through Christ our Lord. Amen.

Set us free, save us, vivify us, O Blessed Trinity!