Usman Nurmagomedov and his associates were involved in an ambush on Merab Dvalishvili in the lobby of an Abu Dhabi hotel and reportedly detained and questioned by police on Wednesday.The attack happened as Dvalishvili was giving an interview in the lobby of the Yas Hilton hotel ahead of his upcoming appearance at RAF Abu Dhabi on Saturday.In footage widely shared on social media, Nurmagomedov and his entourage can be seen approaching Dvalishvili…