Maybe the reborn owner thought that your high beams were on while you were coming down from the slope, Because your car was higher then his the light would enter his eyes directly. And on top of that you turned on HIDs while stationary on a speed breaker further blinding him.
There is no need to install brighter lights, next time just flick your high beam continuously so that the other person understands that their lights are bothering you. Just my opinion 
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