> Somebody is using my website design and contents
> which is copyrighted. 
> 
> I want to block this website, can you please let me
What site. You can only block your own.
> know which code is suitable to block them. Our
> website is an commercial website and i have to
> protect it!
> 
> real website: www.homeorbis.com 
> fake website: www.orbisgo.com
Look at the page source and you'll see
!-- Mirrored from www.orbisgo.com/index.htm by HTTrack Website
They mirrored your site with HTT and then globally replaced the reference.

It is time to call a lawyer. That is how you protect it.