Swami Dayananda Saraswati, Guru of Agniveer allows lying and cheating to propagate religion. He says in his book Satyarth Prakash

"Now it must be understood that if it was the belief of Shankar that God and the human soul were identical and that the world was an illusion, it was not good; but if he had avowed this doctrine simply in order to refute Jainism more successfully, it was a little good. " [Satyarth Prakash, Page 347, Chapter 11]