Wikipedia says this of Irresistible Grace
You can also google "R. C. Sproul holy rape of the soul" and find many articles. From what I read, Sproul seems to have said this several times, and has used this in his writings as well to describe Irresistible Grace.
Google and see for yourself.
Jonathan Edwards has sometimes been quoted - notably by R. C. Sproul - as referring to the irresistible call of God as the "holy rape of the soul" but the phrase does not appear in Edward's works. Instead the phrase seems to have been coined by Puritan scholar Perry Miller, and most Calvinists distance themselves from it.
You can also google "R. C. Sproul holy rape of the soul" and find many articles. From what I read, Sproul seems to have said this several times, and has used this in his writings as well to describe Irresistible Grace.
Google and see for yourself.