У страха глаза велики (u strákha glazá velikí).
Literally: fear has big eyes.
Explanation: people who are afraid of something often overestimate the danger or tend to see the danger everywhere.
English equivalents:
- fear takes molehills for mountains;
- fear hath a hundred eyes;
- fear has many eyes.
P.S. All stills are taken from the classic Soviet horror film “Viy” (Mosfilm, 1967) based on the Nikolai Gogol story.