By Catarina Demony and Rene Wagner LISBON/BERLIN (Reuters) – Already struggling with rising living costs, Europeans now face an even deeper hit to their livelihoods as the conflict in Ukraine pushes fuel and food prices higher and threatens to undermine a fragile economic recovery. The surging price of crude oil on world markets has led to the biggest ever weekly jump in gasoline prices at some service stations around Europe, pushing them in some cases above 2 euros for a litre ($8.25/gallon) of unleaded fuel. “The problem is not the price it will be tomorrow, but how much it (gasoline) will c…