At the end of the day, before retiring for the night, the Church has the long-standing tradition of praying for protection through the intercession of Mary, the Mother of God. This is one of my most favorite prayers: Sub Tuum Praesidium:
Let us ask our Heavenly Mother to watch over those critically injured from today’s tragedy in Tucson, Arizona. May the Lord, in His Mercy, heal them in body and soul.
And for those who lost their lives today: “Eternal Rest grant unto them, O Lord, may your perpetual light shine upon them. May they rest in peace. Amen.”
Under thy protection
we seek refuge,
Holy Mother of God;
despise not our petitions
in our needs,
but from all dangers
deliver us always,
Virgin, Glorious and Blessed
Pray for us, O Holy Mother of God, that we may be made worthy of the promises of Christ.