(REUTERS) - Shakhtar Donetsk are hoping a surprise Champions League victory over 2013 winners Bayern Munich on Tuesday can bring some brief cheer to their troubled nation.

Ukraine's military said on Monday that Russian-backed separatists had shelled a district in the eastern city of Donetsk despite the ceasefire negotiated by the leaders of France, Germany, Russia and Ukraine in Belarus last Thursday.

The ceasefire had forseen the creation of a neutral "buffer zone" and withdrawal of heavy weapons responsible for many of the 5,000 deaths in a conflict that has caused the worst crisis in Russia-West relations since the Cold War a generation ago.

The Ukrainian champions have been forced to play their home games in Lviv, more than 1,000km from Donetsk, since July.

Speaking about the conflict, Shakhtar coach Mirceu Lucescu told a news conference on Monday: "We are very disappointed that it is not finished. But we'll try to give to our supporters the satisfaction of seeing our team playing for them."

Bundesliga leaders Bayern are in top form, having thumped Hamburg SV 8-0 on Saturday and coach Pep Guardiola has no injury worries among his squad for the first leg of their last-16 encounter.

The second leg in Germany will be on March 11.