The Bundesliga side lost 3-2 just a day after their team bus was caught up in three blasts as they left their hotel on the way to the Signal Iduna Park.
Manager Thomas Tuchel revealed after the game that his team were not given the option to delay any further after they were informed by text that the game had been rearranged.
And Sokratis, who saw team-mate Marc Bertra taken to hospital to have surgery on an arm injury sustained in the attack, also slammed UEFA for the way the squad were treated.
"I am happy first that I am alive," he told ESPN FC. "It was the most difficult day that I have lived in my life and I hope that nobody else has to live this day. After yesterday I don't have any more space to think about the game.
Read the full article on eurosport.co.uk: 'We are not animals, we are people': Sokratis hits out at UEFA