It is not all happiness in your daily work, not everybody is your friend, but you need to Be objective when giving feedback and also when receiving them.
And there are multiple ways to give feedback, in the company review system, talk privately , talk in public, or talk to his/her boss, .etc. Which is the best depends on the situation and your relationship.
Prepare for this with a solid real case to show your unique value, use a case that could interest the interviewer to ask more about it.
When speaking, follow this template: situation → obstacles → actions → result