 Complete the following phrase:  The record for the longest away unbeaten run stands at eighteen games and is held by Bayern Munich. The run began with a 21 win against Celtic in the 201718 group stage. The streak is still ongoing, with Bayerns eighteenth and most recent away match being a 10 victory against Paris Saint-Germain in the 202021 quarter-finals. During this run, Bayern defeated Barcelona and Lyon in the 201920 quarter-finals and semi-finals respectively, played in Lisbon over a single leg as a result of the COVID-19 pandemic. They also defeated Paris Saint-Germain in the 