Severus was by now clenching his teeth so firmly, Harry was afraid they would break. One-handed, he removed his belt and forced it between his advisor's lips. It seemed to help, if only a little. Pops outside of the ritual circle had him look up. The twins and Neville had arrived. It didn't matter. He could not spare them a thought. Not with Severus" life on the line! "Stay away!" He instructed sharply.