gerettet
rescued
Freed from danger, an emergency, or a threatening situation and brought to safety.
Die geretteten Wanderer waren erschöpft, aber glücklich.
The rescued hikers were exhausted but happy.

saved / rescued
Loading your saved state.
rescued
Freed from danger, an emergency, or a threatening situation and brought to safety.
Die geretteten Wanderer waren erschöpft, aber glücklich.
The rescued hikers were exhausted but happy.

'Gerettet' (saved/rescued) is the past participle of the verb 'retten' (to save/rescue). Here it is used like an adjective to describe the state of a person or thing that has been freed from an emergency.
Der Hund wurde aus dem kalten Wasser gerettet.
The dog was rescued from the cold water.
This word can stand before a noun (attributive) or be connected with the verb 'sein' (to be) (predicative). Both forms describe the result of a rescue.
Der gerettete Bergsteiger wurde ins Tal gebracht.
The rescued climber was brought down into the valley.
When living beings are involved, 'gerettet' (rescued) usually means being freed from life-threatening danger. Typical contexts are accidents, fires, or natural disasters.
Die Feuerwehrleute brachten die geretteten Bewohner in Sicherheit.
The firefighters brought the rescued residents to safety.
In the figurative sense, 'gerettet' (saved) is often used for abstract things that have been saved from a negative ending. A very common expression is 'Der Tag ist gerettet!' (The day is saved!) or 'Der Abend ist gerettet!' (The evening is saved!).
Als der Strom wieder anging, war der Filmabend gerettet.
When the power came back on, movie night was saved.
sure / safe
'sicher' and 'gerettet' can both have to do with protection from danger. 'sicher' describes the state: someone is no longer in danger, or is not in danger. 'gerettet' emphasizes how that state was reached: someone was in danger and was freed from it. That is why a person can be safe after being rescued, but not every safe person has been rescued. Learners may confuse the words because both fit after a dangerous situation. 'gerettet' clearly says that there was an emergency beforehand.

Die Wanderer waren gerettet, als die Bergwacht sie im Schnee fand.
The hikers were rescued when the mountain rescue team found them in the snow.
Nach dem Unwetter waren die Kinder im Haus sicher.
After the storm, the children were safe in the house.