Fight phantoms in Minecraft PE?

Hi, I've just been out in Minecraft PE Survival and I'm collecting my levels on my XP farm. Since I haven't slept for about 1 hour and 30 minutes, a phantom attacked me. I have no armor, I'm in a village, it is night and I have a diamond sword. Do you have any tips what I can do to prevent me from dying? (I'm acknowledged because he took 4.5 hearts from me)

Sleep?

Just sleep or wait until day comes

But the phantom is about 3 blocks in front of me

Then run away and hide somewhere where it can't get to you