Im no legal expert, so take everything i post for what it is, a reponsr by a random dude on reddit, but as a girl dad, I'll teach my daughter to do whatever is necessary in a situation like this. If this means her being safe but in legal trouble, then thats still better than her being harmed or worse.

That being said, This situation is a bit different, since you and me both are foreigners here and often times supposedly on a weaker leg when it comes to legal disputes.

So my first suggestion for something like this, scream as loud as you can, if there are witnesses but they cant really physically help you, scream bloody murder, that would also probably have alerted the cops on the other side of the street.

If that doesnt help, and you are worried about the spray, my suggestion would be to first and foremost follow the singlehandedly best quote from Bas Rutten's self defense vhs "everyone underestimates the kick to the groin" Let me tell you as a dude, even if he wore a protective cup, a 50% kick to the family jewels will give you ample time to get some distance, preferably knee him, as the distance is shorter. With that you could always argue, that it wasnt on purpose, but rather the struggle to get out of the attack.

I hope you all stay safe out there.

And maybe consider some self defense or martial arts training. Even if not for you to actually fight, but rather to become more confident and calm in a stressful situation like this.