Collocations for brilliant - adj.

be, look

just, really, truly
Her performance was truly brilliant.
Winning that race was just brilliant. (esp. BrE)

absolutely, quite, totally, utterly
an absolutely brilliant idea

technically
Her performance was technically brilliant but lacked feeling.

at
He's brilliant at chess.

Brilliant is used with these nouns:
acting, actor, actress, article, barrister, career, catch, colour, dancer, deduction, display, eye, feat, flash, footballer, future, goal, goalkeeper, golfer, gymnast, idea, insight, intellect, invention, job, journalist, lawyer, light, manoeuvre, mathematician, mind, move, musician, news, parody, performance, photographer, physicist, piece, plan, player, ray, red, satire, save, scarlet, scholar, scientist, sequence, shade, shot, solo, speaker, star, student, sun, sunlight, sunset, sunshine, surgeon, thinker, white