Jeb Bush said on Tuesday that part of his strategy for Saturday’s Republican presidential debate will be not to allow Donald Trump to bully him.

“It’s just, show my heart,” Bush said of his strategy on the Dave & Liz show on South Carolina radio. “Show the depth of knowledge that I have, show good humor, stand my ground. Don’t let Trump bully me.”

Trump has repeatedly derided Bush on the campaign trail and during debates, calling him “low-energy” and attempting to shush him on stage.

Bush went on to say that he was eager to confront Trump on the issue of eminent domain, which he says the businessman has use to kick an elderly woman out of her home.

“These issues need to come out,” Bush said. “And I’m gonna take it to him, but do it hopefully with enough civility so that people won’t get turned off.”

Earlier in the interview, Bush said he hadn’t had much time to think about his debate strategy yet, adding, “It’s like going to get a root canal. I think maybe non-preparation might be the best strategy.”