Isaiah 61:3 To all who mourn in Zion,
He our Lord, will give a crown of beauty for their ashes,
a joyous blessing instead of mourning,
and festive praise instead of despair.
And in their righteousness, they will be like great oaks
That the LORD has planted for his own glory.
One blogger used this prayer for the Fall of 9/11. It was a good choice.
You can read it here