The phrase "lit in to" means to attack or scold someone harshly. Some antonyms for this phrase would be to praise, celebrate, or commend someone. Alternatively, you could use words like support, encourage, or compliment, which would suggest a positive response rather than a negative one. You might also use antonyms like ignore, avoid or overlook, which would involve not responding at all. Remember that antonyms depend on the context of the sentence and the overall tone, so you should always choose a word that makes sense in the situation at hand.