A. Yusuf Ali:Translation:
They have "Obedience" on their lips; but when they
leave you, a section of them Meditate all night on
things very different from what you tellest them. But
Allah records their nightly (plots): So keep clear of
them, and put your trust in Allah, and enough is Allah
as a disposer of affairs. 600

Muhammad Asad:Translation:
And they say, "We do pay heed unto thee'' 95 - but when they leave thy presence, some of them devise, in the dark of night, [beliefs] other than thou art voicing; 96 and all the while God records what they thus devise in the dark of night. Leave them, then, alone, and place thy trust in God: for none is as worthy of trust as God.
600 If we trust people who are not true, they are more likely to hinder than to help. But Allah is All-Good as well as All-Powerful, and all our affairs are best entrusted to His care. He is the best Guardian of all interests. Therefore we should not trust the lip professions of hypocrites, but trust in Allah. Nor should our confidence in Allah be shaken by any secret plots that enemies hatch against us. We should take all human precautions against them, but having done so, we should put our trust in Allah, Who knows the inner working of events better than any human mind can conceive.