Hebrews 13:20,21
The God of peace who brought again from the dead our LORD Jesus, that great Shepherd of the sheep, through the blood of the everlasting covenant, Make you perfect in every good work to do His will, working in you that which is well-pleasing in his sight, through Jesus Christ; to whom be glory for ever and ever.
Amen.

Or this

The peace of God, which passeth all understanding, keep your hearts and minds in the knowledge and love of God, and of his Son Jesus Christ our LORD. And the Blessing of God Almighty, the Father, the Son, and the Holy Ghost, be amongst you, and remain with you always.
Amen.