Here’s a responsive litany from the Lutheran Church of Australia. It is based on Mark 1:9-11 and Luke 3:21-23, the baptism of Jesus.
Responsive Litany
(based on Mark 1: 9-11, Luke 3:21-23)
The Father's voice bears witness to the Son.
God has shown himself to us.
The Son bows his head beneath the waters of the Jordan.
God has shown himself to us.
Christ submits to John's baptism and frees us from slavery.
God has shown himself to us.
God's love is seen to the end of the world.
God has shown himself to us.