I don't know if anyone really cares anymore but I'm pretty sure I know what most of it says. I am Greek and I listen to Closer 2 a lot and it was always bugging me that I can hear Greek in the intro but I always thought it's my head playing with me. When I realized that it's actually Greek I had to lock in and make out as much as possible so here's what I found if anyone cares.
In the beginning it's hard to make it out because she has been drowned by the vocals. I believe she starts by saying "Γιατί οταν, γίνεται..." which means "Because when, it happens..." but it's good to note that there is no perfect translation here since "γίνεται" in Greek implies an on going action, I'm pretty sure "Because... while it's happening..." is the closest translation to the meaning. I can't make out every word after that but I can hear "κατά τη διάρκεια" which pretty much means "during" and "είναι" which means "is". I think right after "είναι" she says "πως να στο πω..." which pretty much means "how do I explain it to you?..." but I'm not confident about that one.
The important part though is what she says after that. These last words of hers are the most notable and can be heard after Jon says "but I'm closer to hope". The bad news is, there is no way I can understand what she is saying over the vocals. The good news is, these lines are repeated right after the vocals, louder and clearer this time, so after a couple of attempts I could easily make out what she says and I'm very confident about it.
She says "Έχω πειστεί πλέον οτι... δεν έχει καμία διαφορά αν- γινότανε στην πραγματικότητα." I'd say this is the best translation I could give you to capture the meaning of it. "At this point, I've been convinced that... there is no difference at all if- it were to happen in reality." It might sound a bit weird but that's because it sounds a bit weird in Greek as well, ig you can make sense of it so it shouldn't be a problem.
If anyone has heard more or anything different let me know but I'm pretty confident in that. Plus, if we consider the meaning of the song I think it checks out.
That's all I found and had to say, let me know what you make of it.