Let's break up the Moroccan Arabic phrase to learn how to say you're right in Moroccan Arabic.

عند
3and at

عندك
3andek at your place, in your possession, you've got

الحق
el-7aq right

عندك الحق
3andek el-7aq

Literally, you've got the right!

And that is how to say you're right in Moroccan Arabic!