GET OUT OF HERE EASY, STALKER

Yukkuri shiteitte ne, Sutarukeru

BTW, it's not Take it easy, it says: CALM DOWN!!!
Somebody obviously didn't learn his Russian

'Take it easy' can mean calm down in English. I put what I figured they meant and linked the dictionary definition.

Будьте проще! =w=

I believe most unlikely crossovers would be becoming of this...

We're using Умерьте пыл!, but Успокойтесь! works perfectly here too.

Literally "calm down".
"Не парься" mayby?

Take it easy - полегче, не парься, не волнуйся, будь спокойней
Успокойтесь - do not worry, calm down, settle down, to cool one's head

There's a difference between "Take it easy" and "Calm down" in Russian, thinking that they are the same is a mistake.