The New York Times published a story alleging that person A did X. You publish a piece that said, "The New York Times reported that A did X."
Later, Person A sues the New York Times and wins. Can that person then sue you for republication of the New York Times libel and win? Or is your statement that "the New York Times reported..." factual enough to defeat the suit.
Would the answer change if you published your statement after the commencement of the lawsuit? That is, would the lawsuit put you on "notice" that the New York Times' claim was disputed?