Theft protection V70 in Poland?

Hello, on Monday I’m going to Lithuania and Poland for a few days. My uncle told me to remove a relay or a fuse in the engine room every time I park the car. Does one of you know what to pull out of the car? I think something that will paralyze the starter, right? Ohso, I drive the V70 D5, model year 2002. Please answer until Sunday evening;-) Thank you:-) G.