Stevie Wonder's Don't you worry...

Of course the lyrics of Don't you worry 'bout a thing are easily to find. That is, of the first three minutes. But what on earth is the good man singing at the end of the song, the part with the accents?

Is it something in Spanish? And what does it mean?

Here's the link for the song on YouTube: http://www.youtube.com/watch?v=QkBUx6Zn6mo
The first time the backing vocals are singing it, is at 3:30.

Thank you for taking the time!

Quite hard to hear through the music but I think it's English - ??

'No -don't stop - be'in scared of life (of it)'

I think!?

Hmm, could be the right words, I'm going to listen to them!

Thank you!