I responded to similar questions from others, in my explanation of the various points in the prophecy. That explanation can be read by selecting the yellow hand pointing to the right, in the navigation bar that I created just below the main image of Chökyi Lodrö, and at the very bottom of the article. For your convenience however, I am pasting it below:

Additionally, a point must be made in regard to which practice and which teaching is being referred to in this prophecy, simply because the other translation that I just mentioned makes the mistake of confusing the prophetic text as being the teaching that is referred to by Chökyi Lodrö. To help make this point clear, here is the relevant paragraph at the beginning of the text:

"I have this to say about it. While I was residing in the great expanse of space, I was thinking of and gazing on the beings of the world. So, listen! There is a teaching useful during the time when the dark age arises. If one writes of it, propagates it, and practices the "Great Responsiveness Meditation" and recitation, impurities and obscurations will be quickly purified. If one sincerely makes offerings to this spiritual text with flowers and incense, all sentient beings will benefit. By propagating this text and writing about it, one will obtain a good existence throughout all of one's lives."

If one reads the bolded text carefully, it is clear that what one is supposed to write about, propagate, and practice is the Surangama Sutra in which the meditation practice of the “Greatly Responsive One,” Avalokitasvara, is described. There is no “recitation” in this prophetic text, only a short mantra of protection to be placed on the body. One does not ‘practice’ a tattoo, nor something otherwise placed on the body, like a bandaid. It is so ridiculous to miss this point that one has to wonder about what else is being missed in the other translation. The Surangama Sutra, on the other hand, has a very long mantra that is recited daily, each morning, in Buddhist temples throughout China and Southeast Asia, and elsewhere in the world, to honor the Surangama Sutra — and for exactly the reason this prophetic text states is its effect: purifying impurities and obscurations, and the attainment of great responsiveness. It is simply the ignorance about the Surangama Sutra — because of the ongoing campaign, principally by academics — that has so misled students of Tibetan Buddhism.

I hope that helps guide you Lauri.