YOU SAID:

I said let him cook, LET HIM COOK!

INTO JAPANESE

私は彼に料理をさせて、彼に料理させましょうと言いました！

BACK INTO ENGLISH

I said let him cook and let him cook!

INTO JAPANESE

私は彼に料理をさせて、彼に料理させてくださいと言いました！

BACK INTO ENGLISH

I said let him cook and let him cook!