At each service daily, a prayer, or 'collect' is used from the Book of Common Prayer. The collect for this week, the First Sunday after Easter is:
ALMIGHTY Father, who has given thine only Son to die for our sins, and to rise again for our justification; Grant us so to put away the leaven of malice and wickedness, that we may alway serve thee in pureness of living and truth; through the merits of the same thy Son Jesus Christ our Lord. Amen.
Our PDF booklet of all the Prayer Book collects is available here.