My view is that faith in a proposition requires stopping one's search for evidence and making a commitment to take a risk on that proposition--and maintaining one's commitment in the face of counterevidence.  This applies to both religious faith and more mundane cases of faith, such as faith in a friend. 

This view is spelled out in 'Can it be rational to have faith?' (reprinted here, in a version for a general audience, rather than a decision-theory centered one), where I also explain when and why it is rational to stop one's search for evidence and make a commitment.  These conditions are further spelled out and defended in 'Instrumental Rationality, Epistemic Rationality, and Evidence-Gathering'.

'Faith and Steadfastness in the Face of Counter-evidence' explains when and why it is rational to maintain a faith-commitment in the face of counterevidence: why it is rational to continue to act on faith, and why it is rational to continue to maintain a belief based on faith.  This work is informed by 'Rational Faith and Justified Belief', which explores the relationship between faith (on my view) and belief (on a number of views).

‘A Faithful Response to Disagreement’ shows how rational faith can shed light on the problem of peer disagreement. I argue that if you rationally have faith in a claim, the presence of a disagreeing peer should make you lower your credence in that claim but maintain your belief.

‘Faith and Traditions’ explains how my view of faith can shed light on the problem of conversion (both religious and scientific). I argue that we can see why three central features of traditions or paradigms—recalcitrance, gestalt, and conversion—can be seen as rational responses to evidence.

‘Faith and Rational Deference to Authority’ explains why faith in the sense of deference to authority is a special case of faith in the sense I defend, and argues that it can be rational to defer to an authority about the truth of a claim or about what you should do, even when your own reasoning suggests the authority is wrong.

An undergraduate-accessible version of my work is here: 'When is Faith Rational?'.

'Reason and Faith' is an encyclopedia article that explains the various accounts of faith in the literature and how they relate to rational belief.

See PHIL 290 Syllabus - Philosophy of Religion: The Nature, Ethics, and Rationality of Faith