YOU SAID:

I am going to need to stop you right there.

INTO JAPANESE

あなたをそこで止めなければなりません。

BACK INTO ENGLISH

I have to stop you there.

INTO JAPANESE

そこで止めなければなりません。

BACK INTO ENGLISH

We have to stop there.

INTO JAPANESE

そこで立ち止まらなければなりません。

BACK INTO ENGLISH

I have to stop there.

INTO JAPANESE

そこでやめなければなりません。

BACK INTO ENGLISH

I have to stop there.