Source: The Great Interpretation of Dreams (Ibn Sirin)
Peace in a dream indicates security, reconciliation, and the end of enmity. Making peace with an enemy indicates reconciliation with him.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Peace indicates good tidings and goodness. Whoever sees himself greeting people with peace will receive good from them.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Peace is interpreted as goodness and security. Whoever sees himself greeting someone with peace will attain goodness and security.