When the flames hit the demon he hissed, dropping her to the ground as he turned to face the pair. Serena slid down the wall hit the ground, barely awake. She felt arms around her and opened her eyes weakly, seeing Chas. She smiled weakly and said "I...got her phone...in my bag..." She was shaking badly in his arms, her skin pale and cold. 

John moved in front of her and said "Gotcha dirt bag" He waved his hand and a seal appeared around the demon. He clapped his hands and the seal flashed. "We banish you back to the realm you belong...with these words and holy flames..." He looked at Kay and said "Blast him with your flames now!"