Like the manor, the cemetery was protected by a thin layer of barrier that wavered when they passed through it. Cygnus let the illuminating crystal on his hand float above them and with a snap, it also illuminated the cemetery. It also showed several black wisps floating around.
With so many evil spirits in that place, the evil energy was being divided which couldn't sustain the necessary amount that could transform any of them into a malevolent spirit. Galahad looked behind him and signaled for his men to destroy the spirits. Cygnus was happy to stand on the side and be a spectator because he was curious to know how the sentinels would deal with those evil spirits.