Italian Phrase: Buon per te. (Good for you.)
If someone comes up to you and starts gloating about the fact that they won the lottery, you could a) be polite and say Che bello! (That’s great!), b) act genuinely happy for the person and say Sono felicissimo/a per te! (I’m so/very happy for you!) or c) let your sarcastic side loose and respond …