Prayer endings are often used to signify the end of a prayer. The most common prayer ending is 'AMEN, ' which is a Hebrew word meaning 'so be it.' It is typically used in Christian and Jewish prayers. Another common prayer ending is 'Ful, ' which is a shortened version of the Latin phrase 'fiat lux, ' meaning 'let there be light.' Both of these prayer endings are used to signify the end of a prayer and to show agreement with the words spoken.