A Ukrainian official said Ukraine "supports the framework's essence, and some of the most sensitive issues remain as points for the discussion between presidents."
Zelenskiy said only the United States and U.S. President Donald Trump "have sufficient strength for the war to finally come to an end."
The White House did not immediately respond to a request for comment on the missile.
The statement from Modi's office made no mention of a call for a ceasefire.
Russia's Foreign Ministry has ruled out the deployment of troops from NATO countries to help secure a peace deal.