Prayer Against Disengagement

Where else, but the Kotel? Rav Mordechai Eliyahu and Rav Avraham Shapira were there, along with over 10,000 others, including many Hareidim. Many Knesset members joined in as well.

Also, R' Lazer Brody is one who advocates prayer over protests.

Meanwhile, Jonathan Rosenblum is getting worried over disengagement fallout. An interesting article - I don't know if he's right or not - but worth reading.