Psalm 121 is the passage my mom asked us to learn this year (a Scripture verse, and going to the Messiah sing-along, is what she wants for Christmas every year). With less than a week to go, I think my family might have a better shot at memorizing the Hallelujah Chorus than nailing the whole psalm, but we are trying. And I gotta hand it to her; Mom picked a good one. In addition to being just plain majestic, Psalm 121 is chock full of powerful prayer promises.
If you (or someone you love) could use an extra measure of help, strength, or protection, Psalm 121 has you covered. Try praying the whole thing, or just use the last two verses:
Heavenly Father, keep _____ from all harm. Watch over his/her life. Watch over his/her coming and going, both now and forevermore. (Psalm 121:7-8)