Does Iblis mislead Muslims?
Yes
7 :16
He [Iblis] said: Now, because Thou hast sent me astray, verily I shall lurk in ambush for them on Thy Right Path.
No, he only misleads non-muslims.
15:39-40
I [Iblis] verily shall adorn the path of error for them in the earth, and shall mislead them every one, Save such of them as are Thy perfectly devoted slaves.
38:82-83
Then, by Thy might, I [Iblis] surely will beguile them every one, Save Thy single-minded slaves among them.
The verses do not say that Iblis doesn't mislead Muslims. The verses say that only few do not get effected by Iblis. The scholars say that among the few are prophets & messengers of God and people of high status of faith.
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