The following quote has been widely attributed to Desmond Tutu:
When the missionaries came to Africa, they had the Bible and we had the land. They said “let us close our eyes and pray.” When we opened them, we had the Bible, and they had the land.
Examples of the attribution:
Afhir Europe - misspelling his name, and describing him as an 'African novelist'.
Scots Independent, attributing the source as The Observer.
Desmond Tutu is an outspoken activist, but this sentiment seems unlikely coming from a former Archbishop and Primate of the Anglican church.
None of the attributions I found suggested when and where he uttered these words.
I am unfamiliar with him, and the attribution might be apocryphal, but it seems a little more plausible, at least.