In contexts like that the campus Catholic chapel, often called a Newman Center, can be an oasis. Indeed, the Newman Center at UMass Amherst (where I was then taking posbacs for my erstwhile career as a math teacher) played an irreplaceable role in my own journey home to Rome. So I was delighted to read that some Newman Centers are taking things to a whole new level, essentially creating a BenOp not of separate colleges, but of Christ-saturated life within secular universities, through the creation of "Newman Halls," that is, Catholic-focused dorms centered on Newman Center chapels.
This is a very, very promising development. I learned of it through a great story in the National Catholic Register, and I hope you'll take the time to tolle, lege, especially if you're an academic in a position to help build something like this at your own school.