29 September may be observed as the Festival of Michael and All Angels, or as Trinity 15.
If 29 September is observed as the Festival of Michael and All Angels:
Michael and All Angels
Tobit 12.6-22 or
Psalms 34, 150
Psalms 138, 148
O everlasting God, who hast ordained and constituted the services of Angels and men in a wonderful order; Mercifully grant that, as thy holy Angels alway do thee service in heaven, so by thy appointment they may succour and defend us on earth; through Jesus Christ our Lord.