strong suit
US /ˈstrɔŋ suːt/
UK /ˈstrɔŋ suːt/

1.
kekuatan, kelebihan
a particular aptitude or talent; a strength
:
•
Public speaking is not my strong suit.
Berucap di khalayak ramai bukan kekuatan saya.
•
Math has always been his strong suit.
Matematik sentiasa menjadi kekuatannya.