Finish for pecan tabletop

Good afternoon, I'd like to dip into the OB's infinite knowledge for some woodworking advise. For background, a little over a year ago we decided to "rescue" the table from my mother in laws house that my wife grew up eating breakfast on, the top was trashed but I saw it as an opportunity to get some cool woodworking done. I had a top made out of 8/4 pecan. We think it came out really cool. problem is it rings really bad, we have just been dealing with it by being careful but now my daughter is old enough to eat at the table and she is not careful in the slightest. I'm not exactly sure what he used when he made it, but I wanna say he said tung oil and a poly mix. I'm thinking I wanna sand it down to get rid of the rings and refinish it with something that offers more protection. So we finally get around to the question; What can I put on it to make it look essentially the same but offer much more resistance to rings and a two year old? Any and all advise is welcome, thanks in advance