You will be all right soon 你很快就会好的

Get a good rest 好好休息一下

Do get plenty of rest 好好休息一下

I hope you'll be better soon 祝你早日康复

Take good care of yourself 你要好好照顾好自己

Wish you a rapid/quick recovery ，“愿你快速（早日）康复”的意思。

We hope you recover very soon! "我们希望你早日康复!"

有关“早日康复”的英文祝福语：

Hoping you're feeling much better today and that you'll soon be back home from your hospital stay.

Hoping you feel much better now and that you'll soon be completely well.

Wishing you a quick return to good health.

These thoughts warm and friendly are coming your way to hope that you're feeling much better today.

Get better soon and stay well for good.

Praying for a speedy recovery and for continuing good health.

Thinking of you today and hoping that very soon you'll be back in top shape.