You are so good with challenges. I have a favor to ask.
All right Bring it on!
I hate public-speaking. Can you make an announcement for me?
That's breeze. = There's nth to it. = That's as easy as pie 별거아니지.
( Don't think that learning French will be a breeze= so easy)
you are my savior!
No sweat. (when you can do sth easily)
(Are you sure you can do it on time? No sweat!)