Leicester City striker Jamie Vardy was sent off during Leicester's win over Wolverhampton Wanderers on Saturday after a unsafe challenge on right-back Matt Doherty.
Cardiff boss Neil Warnock, meanwhile, felt justice was done as his newly promoted team battled gamely to register their first point of the campaign.
United manager Benitez said: "Yedlin will be fine".
He later missed a glorious opportunity to earn the Magpies their first victory of the season.More news: Westminster Terror Suspect Salih Khater Held For Attempted Murder
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There is no doubting that Newcastle should be confident coming into this game; Cardiff are under pressure to deliver in front of their own fans, especially after losing their opening game at Bournemouth. Newcastle's Kenedy experienced one at Cardiff and is no doubt back under his duvet.
Nuno would have been telling the players on the training ground to roll up your sleeves and give it a good go, step it up a little bit.
An angled Ayoze Perez strike was stopped by Etheridge as the frantic pace continued, and Cardiff fashioned another chance when Harry Arter and Josh Murphy were involved in a build-up that ended when Zohore failed to find Junior Hoilett in the area. He touched the ball, but perhaps after he was too much.
At this point, his feud with Benitez has next to no bearing on anything, and both men will only be interested in the match itself.
Do you have what it takes to challenge the best Fantasy Football Managers? After they went down to 10 men, we controlled the game, they tried some counter-attacks but all of the game was ours. Newcastle will play the rest of the match with 10 men.