瑜伽論記 5.143

5.143

四護者，泰師云：約最勝子釋論，離不平等名為命護，飲食知量名為力護，思擇修習二力則煩惱護也，正離加行無分別智是正方便，基師釋：一、命護者，不惜身命護持正法，或護他命根而不損壞，或護自正命不起惡業；二、力護者，謂護智惠摧眾魔怨，或護身力為利益他，或護五力摧怨不屈。心煩惱護者，護諸煩惱不染污心，為護正法起諸煩惱，驅遣惡人壞正法者。正方便護者，善巧方便習行正法。

As for the 'four protections', Master Tai says: According to Jinaputra's Commentary, being free from imbalance is called protection of life; knowing the measure in food and drink is called protection of strength; the two powers of reflective discernment and cultivation are protection against afflictions; and the non-conceptual wisdom properly freed from preliminary application is the right expedient. Master Ji explains: 1. Protection of life means guarding and upholding the true Dharma without begrudging bodily life, or protecting others' life-faculty without damaging it, or protecting one's own right livelihood so as not to give rise to evil karma. 2. Protection of strength means protecting wisdom to crush the hosts of Māra's adversaries, or protecting physical strength to benefit others, or protecting the five powers to crush adversaries without yielding. Protection against mental afflictions means guarding against various afflictions so they do not defile the mind, or giving rise to afflictions to protect the true Dharma by expelling evil persons who destroy the true Dharma. Protection by right expedients means practicing and cultivating the true Dharma through skillful means.