Brother want to cheat after dividing property as per mutual agreement.

We have a small house bought by my father 6 decades back. We are 3 brothers. And my parents are no more now. Due to some family dispute we decided to split our shares which we did on mutual understanding. Important thing is we lost oiriginal papers and as per records house was still on name of its first owner. And while splitting my eldest brother did registry of his share & while me & my other brother decided to do it later. But later my other brother did registry of his and my share on his name without letting us know. Now he wants us to leave this house without paying us even single penny.