I have disembarked my ship at one location and suddenly found myself some kilometer or so above he surface. Inevitably, started falling while trying to use all the juice in thrusters to slow down descent but it was clear. I'm gonna die during the mission. I've accepted my fate.
At the last moment, a thought popped into my mind and I've enabled shields right before the impact. To my surprise, about 66% of shield went down but other than that, I was fine

Free hint for you if you find yourself in similar position ;-)