Salvar diferencias

[ROBINDESBOIS]

It means that when two or more people are different or think in a different way they have to salvar las diferencias, para no pelearse o discutir mucho.
English?

[Ambarina]

settle their differences es lo más parecido que se me ocurre, aunque no es exactamente "salvar sus diferencias" más bien resolverlas.
Put aside their differences ¿quizás?

Espera más comentarios :)

[poli]

You can also say : make amends. Also come to accords
Idiomatically you can say: kiss and make up.
You can also say: bury the hatchet
also: smoke the peace pipe.

I think there's more.

[Elaina]

come to terms

I do believe that "settle their differences" is the most accurate.

[pjt33]

Agree to differ, ¿no?

Para mi "settle their differences" puede ser pelear para decidir el asunto, y no me parece que eso sea lo que Robin quiere decir.

[María José]

To compromise is also similar in meaning.