Cruz appeared Thursday evening on the Houston-based "Michael Berry Show" and was asked whether he thought he was treated fairly in the GOP primary, with the host mentioning Fox News specifically.
 
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"Well listen, there's time for recriminations and you know, everyone who was responsible for the rise of Donald Trump, they will bear that responsibility going forward," Cruz responded.
 
"But there were more than a few players that played a disproportionate role in that rise," he added. "I'm going to focus, instead of looking backwards, I'm going to focus on looking forwards."
 
Cruz returned to Capitol Hill on Tuesday for the first time since dropping out of the GOP race but declined to endorse Trump, who is working to shore up support from establishment Republicans.
 
"I think we left it all on the field," Cruz said Thursday. "My one regret is that we came up short."
 
Cruz said he'll address the Texas GOP convention Saturday afternoon.
 
"The biggest message I'm going to say is simply 'thank you,'" Cruz said. 
 
He'll rally Republicans with a message that, "although the results may not have been as we wanted, that together we started a movement and this movement will continue." 
 
Cruz said he wasn't sure if he'd address the national GOP convention in Cleveland in July, but he indicated he planned to attend out of an obligation to the some 600 delegates he won during the primary.
 
"I don't know if I'll have a role at the convention or not, but I'll certainly be there cheering on the delegates," he said.