Those who are in the company of the godless attack the godly. Why? Puppetry. Satan pulls their strings to accomplish his will but God is in control and even though the enemy has evil intentions through Atheism, cults, and the occult, the Lord turns it around for His will and for the benefit of those who have put their trust in Jesus Christ.
We know that all things work together for the good of those who love God: those who are called according to His purpose.
When Satan sends you an Atheist to attack you, unknown to the devil, God has sent him your way so he can hear the Gospel.
The Word of God is very powerful…“For the word of God is living and effective and sharper than any double-edged sword, penetrating as far as the separation of soul and spirit, joints and marrow. It is able to judge the ideas and thoughts of the heart.–Hebrews 4:12″
Whatever opportunity we get, regardless if they are friendly or not tell them about Christ Jesus. It might be their only chance they have to hear about the Lord