The phrase "cite an instance" is correct and usable in written English.
You can use it when you want someone to provide a specific example or case to support a statement or argument.
Example: "In your essay, please cite an instance where the theory was successfully applied in real life."
Alternatives: "provide an example" or "give a specific case."
She cites an instance when she and her mother were turned away from a hotel in Florida.
He told the senator that the Satmars had a history of helping elect African-American candidates, citing an instance when they even backed one over a Jew.
He cites an instance when Robert Thomson, who was then the Journal's managing editor, tried to prevent the publication of a supposedly damaging article.
Nutt says the chain's relationship with Ofsted also requires improvement, citing an instance when the inspectorate apparently mistakenly sent TKAT data on another academy chain.
The suit cited an instance where Ms. Stefani's likeness could be made to perform "Honky Tonk Women" by the Rolling Stones, or a virtual version of the bassist Tony Kanal could be made to sing in Ms. Stefani's voice.
Judges cited an instance in which "men were disemboweled and their intestines used as makeshift checkpoints," and one in which a boy had all four limbs hacked off and was then thrown into a pit and left to die.
He recalled Thornton's ability to hold his ground in the most trying circumstances, citing an instance in the 1993 run of his West End farce It Runs in the Family.
At times, the distance between the church and the cartels is obvious: Mr. Hernández cited an instance in Sinaloa when, after a senior cartel figure was killed, his associates shot to bits a giant image of St . Jude patron saint of lost causes, apparently because they felt he did not answer their prayers.
He cited an instance when he escaped an Oregon State player who was "wrapped around his ankles".
