Yes. That last quote is from the track Sheep from the Album Animals
The concept album is loosely based on George Orwell’s Animal Farm and the lines not so much a direct attack on Christianity per se as an indictment of the the way the general public allows itself to be mistreated and abused. I am guessing that he parodies prayer to make th point that religion could facilitate this (a kind of “opium for tha masses” idea.) In that way it is anti-Christian I suppose but that isn’t really the point of the song.
These lyrics were written by Roger Waters, who would probably offend you by many of his songs.
Having said that, although he is an atheist and rather insensitive to Catholic sensibilities, he’s not directly anti-Catholic (to my knowledge).
He is very anti-war (he lost his father in WW2 while still baby) and anti-TV and has attacked Thatcher, Reagan, Bush, Blair and Hilary Clinton. He is a supporter of Obama.
He is very much involved with charity apparently.
The first quote you mentioned was from the song Shine on You Crazy Diamond on the Album Wish You Were Here which is a song dedicated to the lost member of Pink Floyd, Syd Barret who suffered from mental illness.
This was also written by Roger Waters and although you might find the use of the term “martyr” odd, I think he meant that Syd was a martyr to his excesses.
I would certainly suggest that Roger Waters solo work be avoided if you are sensitive to lyrical content, but Pink Floyd (with the exception of the Final Cut which is a Waters creation perfomed by Pink Floyd) has some fairly safe stuff.
Wish you Were Here
Dark Side of the Moon
I would say wouldn’t offend
Hope that helps.