Как сказать на Упрощенный китайском (Китай)? “You got this!”/“You got this, dude!”

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In English, “You got this!” is a colloquial phrase you say to assure someone that they will succeed in some upcoming occurrence. It is similar to saying “You can do it!” or “I believe in you!”.

I want to use it in a short, two-line dialogue, so if someone could tell me how to say “You got this!” as well as let me know if the rest of the dialogue sounds natural, that would great.

中文
A: “坏了。我这么紧张！”
B: “别担心吧！(You got this, dude)!”

English
A: “Oh man. I’m so nervous!”
B: “Don’t worry! You got this, dude!”