海外旅行中にスリに遭いましたって英語でなんて言うの？

When one travels abroad, he/she is usually unfamiliar with the safest places to go to unless he/she has hired a tour guide or is accompanied by a friend. He/she is bound to go to places where pickpockets or petty thieves thrive. Pickpockets usually favour crowded places such as outdoor events, streets or shopping areas. A visitor abroad will hardly know which places to avoid unless he/she has been forewarned. As a result, some people end up being pickpocketed. So, if this happens to you, when you get back to your home country, you may say: When I traveled abroad, I was pickpocketed while walking in a busy street. or I was pickpocketed at an outdoor event when I traveled abroad.

A "pickpocket" is a thief who steals your belongings very discreetly. The past tense is "pickpocketed". You can say I "was" or I "got" pickpocketed. Traveling "overseas" is another way to say traveling abroad.

"I was a victim of pickpocketing while in my travels" There are many ways to express this sentiment or feeling. One of them is the one above. This expression is a bit general since you are just letting people know that while you were travelling you had the bad experience of getting pick-pocketed.

This is a general statement to explain that you were pickpocketed while traveling. However you can add more details when describing the incident: E.g. "I was pickpocketed while I was traveling, my phone was stolen from my pocket".

I was pickpocketed while abroad. Is a simple way of saying that while you had been travelling, someone had reached in your pocket or bag and stolen valuables from you. " When I arrived home, I discovered that I had been pickpocketed!" I was robbed when I was abroad. This can be used for even more serious crimes, like stolen luggage, or other much larger items. " My luggage had been stolen while I was travelling"

If you would like to explain that you were pickpocketed while travelling abroad, then the above statement seems to fit that scenario.