This is the prayer I prayed this morning as the invocation for our service. I borrowed it from Archbishop Desmond Tutu.
Oh God, All holy one,
You are our Mother and our Father
And we are your children.
Open our eyes and our hearts
So that we may be able to discern Your work
In the universe,
And be able to see your features in every one of Your children.
Help us to know that You have created us
Members of the same family
Your family, the human family.
Help us to beat our swords into plowshares
And our spears into pruning hooks
So that we may live in peace and harmony,
Wiping away the tears from the eyes of those
Who are less fortunate than ourselves.
And may we know war no more,
As we strive to be what You want us to be:
Update: For more prayers on peace check this out.