"Pesame" y "quiero expresar mi pesame sobre la muerte del Fulano" "Que Dios te acompania en estos tiempos de tristes"
I honestly don't remember too many and just went through the funeral of my mother in law. Especially if you are entering in the house to pay your respects usually a pesame works well. Most probably people will not notice. A few tight hugs and some tears and they appreciate your presence.