你最好不要惹他， 要知道他可是什么都做的出来的。能用英语翻译出来吗？

You'd better don't annoy him,know that he can do everything.

You'd better not offend him, there should be nothing he dare not do.

You'd better not annoy him, but he should know that anything done by .

你最好不要惹他， 要知道他可是什么都做的出来的:
You are the best and do not ask for him, know he does everything however of come out

Let the sleeping dog lie. You should know that he will do anything.
(或直接说Unless he will do anything.但不能用everything)

Let the sleeping dog lie 是一个谚语，就是让睡着的狗好好躺着吧，不要惹它。