Why are you running this thing if you're just going to shut it off?

How will you know if it becomes hostile? Making a judgement regarding whether it's hostile is, itself, a battle of wits, since a hostile system would try to outsmart you... and hypothetically, it's smarter than you are.

But let's consider this type of scenario more broadly.

Suppose you were in a situation where a being hostile to you could easily end your life. For example, a hungry lion is 10 feet away. What are you going to do?

Your first priority will be to ensure your own survival. Any subsequent objective you might have in this world will depend on you surviving this encounter with a hungry lion.

Relative to the lion, you're kind of a superintelligence. You might utilize technology which is incomprehensibly advanced from the lion's perspective, e.g. a firearm.