hold your own against somebody in something

Từ điển Oxford Advanced Learner 8th

hold your ˈown (against sb/sth) (in sth) idiom
to remain in a strong position when sb is attacking you, competing with you, etc
•Business isn't good but we're managing to hold our own.
•She can hold her own against anybody in an argument.
•The patient is holding her own although she is still very sick.
Main entry: ↑own_idiom