Portugal
The Constitution of Portugal requires that the following oath be taken by the President-elect upon entering into office:
In Portuguese:
Juro por minha honra desempenhar fielmente as funções em que fico investido e defender, cumprir e fazer cumprir a Constituição da República Portuguesa.In English:
I swear by my honour to faithfully perform the functions in which I am invested and to defend and observe the Constitution of the Portuguese Republic and cause it to be observed.Read more about this topic: Oath Of Office