"Stay cool and everything will be alright anyway. If you get upset, it won't solve anything."
Here's a breakdown of the translation:
* Sayer cool: This is a colloquial way of saying "stay cool" or "chill out."
* et tout IRA bien de toute facon: This translates to "and everything will be alright anyway."
* situt enerve: This means "if you get upset."
* ca sera pas une solution: This translates to "it won't be a solution."
The entire phrase emphasizes a calming and optimistic approach, suggesting that getting upset won't help the situation.