The most common and most likely answer to this crossword clue is the 9 letter word ENKINDLED
I've seen this crossword clue in Independent
E
N
K
I
N
D
L
E
D
Buddy explains!

The straight part
We know that "lit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lit = enkindled.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ENKINDLED mean?
ENKINDLED verb- To kindle; to arouse or evoke.