"It has only gotten worse in the age of President Trump," Hannity said.

"Now, it’s no secret I have been a supporter of the president and of course his policies. And quite simply, these liberal fascists — they can’t stand conservative voices."

Hannity said he has thick skin and is used to being attacked but can no longer remain silent and "let the left slander against me slide."

"So, from now on, I want you to be informed of what I am doing and why I’m doing it," he said.

"If there’s any person or group or any organization, any media outlet that slanders, lies about me, besmirch as me and my character, I am going to be calling them out."

His comments come on day after conservative commentator Debbie Schlussel said the Fox News host once invited her back to his hotel room after an event at a Detroit bookstore. The accusation came as allegations of sexual harassment continue to roil the network. Hannity on Monday vowed to sue the former guest of his program with "some of the finest and toughest lawyers in the country."

Hannity mentioned the accusations during his monologue. He said his breaking point happened this past weekend, when Schlussel, whom Hannity claims has for more than a decade made "the most outrageous, unfair, untrue allegations against" him, made "ridiculous and completely untrue claims."

Hannity strongly denied the claims by Schlussel, calling them "100 percent false and a complete fabrication."