According to Osho, the only way to truly protect a beloved teacher is to grow up inwardly: become mature, integrated, and attuned to the divine. No outer defenses can nourish the master; your transformed life does. Let your love, celebrative dance, and the cool flame of unconditional sharing embody the teaching, thereby preserving and saving the essence.
You protect the teacher best by becoming loving, wise, and whole yourself, not by guarding them from the outside.