Bullies resilient guys (9)

I believe the answer is:

strongmen

I'm a little stuck... Click here to teach me more about this clue!

'bullies' is the definition.
I know nothing about this answer so I can't judge whether this works.

'resilient guys' is the wordplay.
'resilient' becomes 'strong' (I've seen this before).
'guys' becomes 'men' (guy can mean a man).
'strong'+'men'='STRONGMEN'

Can you help me to learn more?

I've seen this clue in The Irish Times.

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