Tehillim to Say from Rav Eliyahu
Regarding praying for the undoing of the disengagement:
Last week, Rav Mordechai Eliyahu said to say chapters 120-124, 130, and 140.
Now, he says we should say the verses that spell out גוש קטיף לעד (which means "Gush Katif forever"). Preferably, one should use the Hida's Tehillim (a special Tehillim that has verses in the order of the Alef Bet) to spell it out. If one doesn't have the Hida's Tehillim, one should say the verses of chapter 119 to spell it out.