Justin Baldoni said that Blake Lively tried to prevent him and his Wayfarer Studios team from attending the premiere of their movie “It Ends With Us” in August due to a conflict between them.

According to the actor’s $250 million lawsuit against the New York Times, which he filed on Tuesday, Lively allegedly “initially refused to permit his attendance” at the event to “undermine” Baldoni’s role as director, executive producer and star on the project.

“Only after significant pressure did she reluctantly agree to allow Baldoni and the Wayfarer team to attend, but under humiliating conditions,” per the court docs obtained by The Post.

“The Wayfarer team and their families, including Baldoni and [producer Jamey] Heath, were segregated from the main cast, barred from the exclusive after-party, and forced to organize their own event at additional cost,” the lawsuit alleges.

“Baldoni’s participation on the red carpet was cut short, and his family and friends were confined to a makeshift holding area in the basement before being escorted into a separate theater after Lively’s departure.”

The “Jane the Virgin” alum’s legal filing further claims, “Not only had Lively stolen the Film, but she also robbed Baldoni and his team of any genuine opportunity to celebrate their hard work.”

Baldoni, 40, claims the alleged snub was one of several moves by Lively, 37, that “systematically sidelined [him] from the marketing of his own Film.”

The “Five Feet Apart” director also names Lively’s husband, Ryan Reynolds, in the lawsuit.

“Baldoni and [Wayfarer Studios] grew increasingly fearful of what Lively and Reynolds were capable of, as their actions seemed aimed at destroying Baldoni’s career and personal life,” the docs claim.

In addition to claiming Reynolds berated him in an “aggressive” confrontation for allegedly “fat-shaming” Lively, the actor also accused the “Deadpool & Wolverine” star in court docs of persuading Baldoni’s agent to drop him as a client.

Baldoni’s former agency, WME — which also reps Lively and Reynolds — denied the allegation in a statement to the Hollywood Reporter on Wednesday.

“In Baldoni’s filing there is a claim that Reynolds pressured Baldoni’s agent at the ‘Deadpool & Wolverine’ premiere. This is not true,” the agency said.

“Baldoni’s former representative was not at the ‘Deadpool & Wolverine’ premiere nor was there any pressure from Reynolds or Lively at any time to drop Baldoni as a client.”

Page Six has reached out to Reynolds’ rep for comment.

Lively’s legal team previously responded to Baldoni’s lawsuit against the Times in a statement to Page Six.

“Nothing in this lawsuit changes anything about the claims advanced in Ms. Lively’s California Civil Rights Department Complaint, nor her federal complaint,” which was filed on Tuesday.

“This lawsuit is based on the obviously false premise that Ms. Lively’s administrative complaint against Wayfarer and others was a ruse based on a choice ‘not to file a lawsuit against Baldoni, Wayfarer,’ and that ‘litigation was never her ultimate goal.’ As demonstrated by the federal complaint filed by Ms. Lively [Tuesday], that frame of reference for the Wayfarer lawsuit is false.”

They added, “While we will not litigate this matter in the press, we do encourage people to read Ms. Lively’s complaint in its entirety. We look forward to addressing each and every one of Wayfarer’s allegations in court.”

Baldoni’s legal filing against the Times for alleged libel and false light invasion of privacy coincided with the “Gossip Girl” alum formally filing a lawsuit against him for alleged sexual harassment, retaliation, breach of contract, infliction of emotional distress, invasion of privacy and lost wages.

Baldoni previously denied the similar allegations Lively made in her separately filed California complaint.