When the DJ announced a contest, the phones 'lit up'. [=the lights on the phones lit up because many people were calling]
His eyes/face 'lit up' [=he looked very happy and pleased] when she walked in the room.
He 'lit into' his employees for their sloppy work. [=he criticized them very harshly]
(..) Maybe he thought of them on the streets... ...or his child growing up not knowing her daddy. Whatever it was... ...something lit a fire under that boy's ass. Thought I might try for my high school equivalency. Hear you helped a couple of fellas with that. (..)1994 The Shawshank Redemption