slyscorpion said:
https://en.m.wikipedia.org/wiki/Ravana
A simple search would say. I really don't know the answer to this though.
So it is a name of some guy, and this guy might be bad or good?
Either way, I am not seeing anything that would make this be useful for anything. I am not seeing that this is a mantra. It just looks like a name.
And if it is a mantra, what would it do? If it is not even clear if it is good or bad. And there is nothing to say what it would do. So you should hope that it is not a mantra, otherwise it would give some completely unexpected and unknown results.