What to say in response to this on Shabbat?

I don’t speak Hebrew (except for a few words and phrases), and didn’t go to synagogue until I was an adult. On Saturday mornings, the synagogue where I go, one or two of the men will walk down rows of seats after touching the Torah scroll during the Torah reading and greet everyone (on the men’s side), and say what sounds like “baruch t’ya”. I said it into Google Translate and ” ברוך תהיה ” came back, with the translation “be blessed”. What I’m trying to find out is what do I say in response to this? I hear people respond but can’t make it out. I know I could ask someone but I don’t want people to know how newb I am. Not that it would matter to anyone, just saying.