Although some might not believe in the authenticity of this text, I think it can still serve as a protection and is quite beneficial because it’s about the qualities of the Buddha, so it can be a form of Buddhanusati which I believe can protect us.
It is not so. Spurious texts abound in great number.
And indeed, it is often chanted in Myanmar. I have heard [without certainty] that it is used commonly within the Mahāsī lineage.
Verily, matters proceed not in such a manner. Had it borne any efficacy, it would surely have been accounted within the Canon or its commentaries.
And were all things to incline toward such a possibility, the Mahāyāna texts—so replete with utterances of protection and preservation—would have been foremost in their proclamation thereof; but such is not the case.