Commonly attributed to Deloria on the internet, or sometimes to a few others, but without legitimate sourcing, the earliest variant of this yet located is a single quotation in Awakened India Vo. 99 (1994) p. 327, ascribed to Fr. Patrick Collins, University of Notre Dame, USA:
Religion is for those who are afraid of going to hell. Spirituality is for those who know they have been there — perhaps through involvement with religion.
The next variant located is ascribed to an anonymous member of Alcoholics Anonymous in Illuminating the Heart: Steps Toward a More Spiritual Marriage (1996) by Barbara G. Markway, p. 28:
Religion is for people who are afraid of going to hell; spirituality is for those who have been there.
A variant also occurs in The Higher Power of the Twelve-Step Program: For Believers & Non-Believers (2001), by Glenn F. Chesnut, Ch. 1 : Discovering a Higher Power:
Religion is for people who're afraid of going to hell; twelvestep spirituality is for those who've been there.
Misattributed
“Religion is for people who are afraid of going to hell, spirituality is for those who’ve been there.”
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David Bowie 105
British musician, actor, record producer and arranger 1947–2016Related quotes

“Religion is for people who fear hell, spirituality is for people who have been there.”
Source: I Never Promised You a Rose Garden

"Politically Incorrect", First Baptist Church, Dallas, Texas, , quoted in * 2011-10-11
Perry Endorser Calls Judaism, Catholicism Path to Hell
Tim
Murphy
Mother Jones
http://www.motherjones.com/mojo/2011/10/watch-perry-endorser-jeffress-calls-judaism-catholicism-path-hell

Quoted in The Orson Welles Story.

“Islamic terrorism is the handiwork of people who’ve heeded, not hijacked, Islam.”
"Wafa Wows the West (But Not Muslims and Media)," http://www.ilanamercer.com/phprunner/public_article_list_view.php?editid1=149 WorldNetDaily.com, March 17, 2006.
2000s, 2006

“Now there's no *beeping* way in hell I'm gonna go over because I'm a little afraid of animals.”
From "The Diary of Billy Talent":