It's actually "So baby don't feel MY pain just smile back." Lyric from Eminem's song When I'm Gone based on him telling his daughters not to mourn him when he dies, but to remember the things we wanted to do for them. It's a lovely song, check it out.
And right now there's a steel knife in my wind pipe I can't breath but I still fight while I can fight as long as the wrong feels right it's like I'm in a flight - Eminem feat. Rhianna love the way you lie