Private conversation is only from Satan that he may grieve those who have believed, but he will not harm them at all except by permission of Allah. And upon Allah let the believers rely.
English Transliteration
Innama alnnajwa mina alshshaytani liyahzuna allatheena amanoo walaysa bidarrihim shayan illa biithni Allahi waAAala Allahi falyatawakkali almuminoona
Tafsir of Verse 10
Conspiring secretly together is of Satan, that the believers may sorrow; but he will not hurt them anything, except by the leave of God. And in God let the believers put all their trust.
Secret counsels are only (inspired) by the Evil One, in order that he may cause grief to the Believers; but he cannot harm them in the least, except as Allah permits; and on Allah let the Believers put their trust.