Dr. Ergun Caner (actual quotation): "All Christian ministers have critics. Some mean well; Others are just corrosive. U can't shut them up, but U CAN SHUT THEM OUT." (source)
Paul the Apostle (actual quotation): "I think myself happy, king Agrippa, because I shall answer for myself this day before thee touching all the things whereof I am accused of the Jews:" (Source: Acts 26:2)
Same Apostle: "Mine answer to them that do examine me is this ..." (I Corinthians 9:3)
Same Apostle: "Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man." (Colossians 4:6)
I'll conclude by quoting from the inspired writings of another apostle:
1 Peter 3:8-17
Finally, be ye all of one mind, having compassion one of another, love as brethren, be pitiful, be courteous: not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing. For he that will love life, and see good days, let him refrain his tongue from evil, and his lips that they speak no guile: let him eschew evil, and do good; let him seek peace, and ensue it. For the eyes of the Lord are over the righteous, and his ears are open unto their prayers: but the face of the Lord is against them that do evil. And who is he that will harm you, if ye be followers of that which is good? But and if ye suffer for righteousness' sake, happy are ye: and be not afraid of their terror, neither be troubled; but sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear: having a good conscience; that, whereas they speak evil of you, as of evildoers, they may be ashamed that falsely accuse your good conversation in Christ. For it is better, if the will of God be so, that ye suffer for well doing, than for evil doing.