Is the word desafios the same in Brazilian and European Portuguese?

Yes

The word "desafios" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only difference lies in pronunciation. In Brazilian Portuguese, the vowels are generally more "open" and clearly articulated. In Continental Portuguese, unstressed vowels (such as the "i" in desafios) are often more "closed" or even reduced/swallowed, leading to a more consonant-heavy sound.

Brazilian Portuguese Examples

1. Enfrentamos muitos desafios no trabalho. (We face many challenges at work.)
2. A vida é cheia de desafios inesperados. (Life is full of unexpected challenges.)
3. Eu adoro enfrentar desafios novos. (I love facing new challenges.)
4. Superar desafios nos faz crescer. (Overcoming challenges makes us grow.)
5. Os desafios de hoje são os aprendizados de amanhã. (Today's challenges are tomorrow's lessons.)

Continental Portuguese Examples

1. Enfrentámos muitos desafios no trabalho. (We faced many challenges at work.)
2. A vida é repleta de desafios imprevistos. (Life is full of unforeseen challenges.)
3. Gosto de assumir novos desafios. (I like to take on new challenges.)
4. Superar desafios torna-nos mais fortes. (Overcoming challenges makes us stronger.)
5. Os desafios de hoje são os ensinamentos de amanhã. (Today's challenges are tomorrow's lessons.)