首楞嚴義疏注經 10.270

10.270

「若諸末世愚鈍眾生未識禪那、不知說法，樂修三昧，汝恐同邪，一心勸令持我佛頂陀羅尼。呪若未能誦，寫於禪堂、或帶身上，一切諸魔所不能動。」

"If foolish and dull sentient beings in the final age have not recognized dhyāna, do not know how to expound the Dharma, and delight in cultivating samādhi, and you fear they may join with heresy, single-mindedly encourage them to uphold my Buddha-Crest Dhāraṇī. If they are not yet able to recite the dhāraṇī, let them write it in the dhyāna hall or wear it on their person, and none of the demons will be able to move them."