What does the phrase "这才是快给我住手" mean? I just have a quick question about a phrase I've come across twice now, but I'm unsure of it's meaning exactly, I found it in this sentence:


  「这才是快给我住手。我可没那个意思陪你去自杀喔」


I feel like it would translate as something like "too quick for me to stop" but I also feel that might be too literal and it doesn't seem to fit the context?
These words came from the translation of a Japnaese manga, 死神 BLEACH Can't Fear Your Own World.
「这才是快给我住手。我可没那个意思陪你去自杀喔」

The original Japnaese words are shown below.



それこそやめとけ。

Stop it!
Just stop it!
That's it!
停！
這就算了吧！
這就省了吧！

This sentence may have the meaning of 才.
But, we don't have to translate it word by word.