In 86% of cases "betray by" is used
I never felt betrayed by India.
I have to say that I feel betrayed by Thaksin.
On the other hand, I feel betrayed by my own words.
It failed when the plot was betrayed by a lower ranking member of the conspiratorial circle.
A few days later she was betrayed by Kwame Tua and was finally arrested by the British soldiers.
I felt betrayed by readers who bought used books, or who didn't buy books by writers of color at all.
Those in the local community who lost fathers, husbands or sons during the conflict felt betrayed by Harold's stance.
So children will figure it out on their own, and I don't think any kid feels particularly betrayed by the whole business.
Now one may feel betrayed by Wilde's implicit volte-face but this backdoor compromise is the mark of someone who thought deeply.
In 1% of cases "betray for" is used
Let us not behave like ostriches anymore! Buddhism can not be betrayed for money.
In 1% of cases "betray of" is used
Three extensive traditional Islamic stories of Jewish enmity towards Islam and betraying of Muhammad, are told.