You say: "Obey the Lord Allah and obey the Messenger; then if you turn away, he is only responsible for the duty placed upon him, and you are responsible for the duty placed upon you. And if you obey him, you are guided; and the duty upon the Messenger is nothing except to convey the Message manifestly".
Three-Time-Knower Lord doesn’t give the soul anything except it can cope with as explained in verses 2: 286; 6: 152 and 23: 62. Impartial Lord has given the freedom either to be grateful or ungrateful as told in verse 76: 3. Since nobody can guide anyone to the Straightpath, the Messenger and believer are commanded just to convey Adhikr, and the Reckoning is with Lord as explained in verse 13: 40. Nobody can blame anyone even Satan for his misguidance as explained in verse 14: 22.
Today, the Arabic Quran reading Fujjar are falsely claiming and boasting that they are the followers of the last Messenger and the last Book. But by hiding and rejecting Adhikr they are serving Satan and are following his footsteps as explained in verses 2: 168-169. So Lord will entrust Adhikr to other people belonging to the Messenger’s community as explained in verses 6: 89-90. See explanation 2: 39, 119; 3: 10; 4: 80 and 150-151.