Praise words and chants
"Halleljuah" — taken from the Bible, meaning praise God, "Praise the Lord" and "Amen", are oft used expressions, chanted during prayers and used to affirm or cheer on group led prayers or other inspirational group activities.
It is quite common for group members to begin and end their prayers with multiple "Thank you, Jesus! Thank you, Lord!" chants.
See also: Prayer, Love words to Jesus