Source: The Great Interpretation of Dreams (Ibn Sirin)
Hiding in a dream indicates fear and salvation from enemies. Whoever sees himself hiding is safe from what he fears.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Hiding indicates keeping secrets. It may indicate cunning and deceit.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Hiding is interpreted as salvation. Whoever sees himself hiding will be saved from worry.