Lukashenko flew into Russia on Friday for talks with Putin amid an uproar in Europe over the grounding of a passenger plane in Minsk and the arrest of a dissident blogger.
Washington announced sanctions that day on senior Russian government officials and Russian entities in response to what US officials said was Moscow's attempt to kill Navalny with a nerve agent.
"Such statements are devoid of logic and grounds and are nothing more than an attempt to unsuccessfully camouflage their policy to further contain Russia," he said.
Kremlin spokesman Dmitry Peskov said Russia had learned lessons from the first wave and saluted what he described as the titanic efforts of the country's federal and regional governments.