Quote Originally Posted by Antonio1986 View Post
Example:
- Yesterday my boss called me in his office and told me that he will give me a raise for my priceless contribution to the completion of the current project of our company!
- Ничего себе!

Correct?
Are there other synonyms for this type of answer (that shows pleasant suprise)!
Correct

As for the synonyms, one that immediately comes to mind is "вот это да!"