It happened: petrol instead of diesel fueled

Good morning, dear, Unfortunately it happened. Opel Zafira Life 177Ps BJ 2019 We have fuelled petrol instead of diesel on reserve and then drove just under 6km. My wife says that she didn’t notice anything during the 6 km. The next morning I wanted to pick up rolls and noticed that the engine is not running around at the start. 5m drove and started again, the same problem and there I had already a clue. After a short exchange with the woman, it became clear then. Car natural I’m not sure if the workshop has even more special possibilities to save the car. We just got the most scared that the car is a total damage. Has someone already built similar misst and the total damage could be averted?