The most common and most likely answer to this crossword clue is the 8 letter word POLARISE
I've seen this crossword clue in The Guardian
P
O
L
A
R
I
S
E
More clues leading to the result POLARISE
Buddy explains!

The straight part
We know that "Create division among" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case create division among = polarise.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 POLARISE mean?
POLARISE verb- To cause to have a polarization.
- To cause a group to be divided into extremes.