I ain't throwin' shade you can't shine in my shadow
He’s saying that other rappers on the come up are just behind him, trailing him in his shadow and they won’t get any shine or love in the game because he’s so much better.
Then, literally you’re behind him while the light is shining on him and he’s casting a shadow that you’re stuck in so you’re not getting any of the sunlight or “shine”.
Last, with “I ain’t throwin' shade” he’s saying he’s not trying to cast a shadow and steal all the shine, it just happens because he’s much better.
To help improve the meaning of these lyrics, visit “Angels Remix” by Los Lyrics and leave a comment on the lyrics box