No, dear boy. I tried to kill you!
5 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.
You can hear this line at 02:14:14 in the Blu-ray version of the movie.
Quote context
[...]
- And, Harry, just be careful.
- You? No, it can't be. Snape, he was the...
- Yes, he does seem the type, doesn't he?
- Next to him, who would suspect... poor, stuttering Professor Quirrell?
- But that day, during the Quidditch match, Snape tried to kill me.
- No, dear boy. I tried to kill you!
- And trust me, if Snape's cloak hadn't caught fire and broken my eye contact, l would have succeeded.
- Even with Snape muttering his little countercurse.
- Snape was trying to save me?
- I knew you were a danger to me right from the off. Especially after Halloween.
[...]