"Don’t you touch her!" Weasley roared and shot another curse at Bellatrix, whose face hardened into a snarl as she crouched slightly and blocked the curse with a snap of her wrist. And in that moment the standoff, the evening’s taut stillness...it was all shattered. And the battle that none of the Order team were in any shape to fight began. Shacklebolt and Lupin moved forward in unison, shouting at Potter to get back – who of course ignored them and charged straight at Snape.