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

Yes

The spelling, meaning, and grammatical function of "proteção" are identical in both Brazilian and European Portuguese. The only differences are in pronunciation:

• Vowel Reduction: In European Portuguese, unstressed vowels (such as the "e" in pro-te-ção) are much more reduced, often sounding like a very short, swallowed "schwa" sound. In Brazilian Portuguese, these vowels are more clearly articulated and "open."
• Nasalization and Rhythm: The nasal diphthong "-ão" tends to be pronounced with more resonance and a more open sound in Brazil. European Portuguese follows a stress-timed rhythm, making the word sound more clipped and the nasalization more subtle.

Brazilian Portuguese

1. Eu preciso de proteção solar. (I need sun protection.)

• 2. O seguro oferece proteção contra roubo. (The insurance offers protection against theft.)
• 3. A proteção de dados é muito importante. (Data protection is very important.)
• 4. Ele busca proteção na família. (He seeks protection in the family.)
• 5. Essa capa serve como proteção para o celular. (This case serves as protection for the cell phone.)

European Portuguese

1. Preciso de proteção solar. (I need sun protection.)

• 2. O seguro oferece proteção contra roubo. (The insurance offers protection against theft.)
• 3. A proteção de dados é muito importante. (Data protection is very important.)
• 4. Ele procura proteção na família. (He looks for protection in the family.)
• 5. Esta capa serve de proteção para o telemóvel. (This case serves as protection for the mobile phone.)