Albus Dumbledore's advanced Knockback Jinx

This spell was used by Albus Dumbledore in early 1996. Manifesting as a jet of silver light with the sound of a gunshot, it had the ability to knock back multiple victims at once. Dumbledore used it to make his escape when he assumed responsibility for the formation of Dumbledore's Army. Using this spell, he knocked back Cornelius Fudge, Dolores Umbridge, John Dawlish, and Kingsley Shacklebolt within seconds, while leaving Harry Potter, Minerva McGonagall, and Cho Chang unharmed.

Behind the scenes
In the book adaption Dumbledore used an advanced Stunning spell instead of the Knockback Jinx..

Appearances

 * Harry Potter and the Order of the Phoenix (film)