WASHINGTON — President Trump’s longtime bodyguard told congressional investigators this week that someone offered to send five women to Mr. Trump’s hotel room during a 2013 trip to Moscow for the annual Miss Universe pageant.

But the bodyguard, Keith Schiller, said he quickly rejected the offer, and testified that he was not aware of Mr. Trump participating in any compromising activity on the trip, according to two people familiar with his testimony.

Mr. Schiller spoke during a closed-door session with members of the House Intelligence Committee for nearly three hours on Tuesday. The panel is one of several on Capitol Hill investigating Russia’s efforts to interfere with the 2016 election.

The 2013 trip is of particular interest to investigators because it provided the backdrop for one of the most salacious allegations in a dossier of opposition research compiled during the election claiming a broad conspiracy between the Trump campaign and the Russian government to aid Mr. Trump’s candidacy. One memo included in the file contained an unsubstantiated account of Mr. Trump engaging with prostitutes in a Moscow hotel room during that trip.