Nicole Kidman with Keith Urban and their daughters

Nicole Kidman with Keith Urban and their daughters

Nicole Kidman says Keith Urban "protects his family" like her late father.

The 'Before I Go to Sleep' actress, who is still devastated following the death of 75-year-old Dr. Antony Kidman from a sudden heart attack last month, admits there are a lot similarities between him and her husband of eight years.

The 47-year-old star told Maria Shriver on the 'Today' Show: "I lost my father, which is a devastating thing for my family and myself right now.

"Keith and my dad -- good men. Choosing to protect his family and take care of himself, but take care of his daughters, and walk the walk, if that makes sense, not just talk the talk."

Nicole, who has two daughters, Sunday, six, and Faith, three, with Keith, has been leaning on the country singer and her religious beliefs for support.

She said: "I do both probably, that would be me right now. I'm lucky to have a rock of a husband and a strong faith. I have both those things."

Meanwhile, the Australian actress insists she wasn't scared to wear no make-up and appear naked in her new psychological thriller alongside Colin Firth.

She said: "I should say yes, but no. Normally, I'm walking around my house with my hair pulled back and no make-up on."