YOU SAID:
I'd rather you not speak to my Highness like that.
INTO JAPANESE
殿下にそんなこと言わないでください。
BACK INTO ENGLISH
Please don't say that to His Highness.
INTO JAPANESE
殿下には言わないでください。
BACK INTO ENGLISH
Please don't tell His Highness.
INTO JAPANESE
陛下には言わないでください。
BACK INTO ENGLISH
Please don't tell His Majesty.
INTO JAPANESE
陛下には言わないでください。
BACK INTO ENGLISH
Please don't tell His Majesty.
That didn't even make that much sense in English.